/tmp/ruby-build.20180503115650.31025 ~
/tmp/ruby-build.20180503115650.31025/ruby-2.3.4 /tmp/ruby-build.20180503115650.31025 ~
checking for ruby... /home/brb/.rbenv/shims/ruby
config.guess already exists
config.sub already exists
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... x86_64-pc-linux-gnu
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.ext/include/x86_64-linux/ruby/config.h updated
configure: ruby library version = 2.3.0
configure: creating ./config.status
config.status: creating GNUmakefile
config.status: creating Makefile
config.status: creating ruby-2.3.pc
	CC = gcc
	LD = ld
	LDSHARED = gcc -shared
	CFLAGS = -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat -std=iso9899:1999
	XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector -fno-strict-overflow -fvisibility=hidden -DRUBY_EXPORT -fPIE
	CPPFLAGS = -I/home/brb/.rbenv/versions/2.3.4/include    -I. -I.ext/include/x86_64-linux -I./include -I.
	DLDFLAGS = -fstack-protector -pie
	SOLIBS =
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.3.0-16ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --with-as=/usr/bin/x86_64-linux-gnu-as --with-ld=/usr/bin/x86_64-linux-gnu-ld --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)
copying dummy probes.h
compiling main.c
compiling dmydln.c
compiling miniinit.c
compiling dmyext.c
compiling miniprelude.c
compiling array.c
compiling bignum.c
In file included from array.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from bignum.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
array.c: In function ‘rb_ary_rindex’:
array.c:1532:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (!rb_equal(e, val)) break;
         ^
array.c:1533:4: note: here
    case Qtrue:
    ^~~~
array.c: In function ‘rb_ary_index’:
array.c:1469:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (!rb_equal(e, val)) break;
         ^
array.c:1470:4: note: here
    case Qtrue:
    ^~~~
compiling class.c
In file included from class.c:26:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling compar.c
compiling complex.c
In file included from complex.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling dir.c
compiling dln_find.c
In file included from dir.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling encoding.c
In file included from encoding.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
encoding.c: In function ‘rb_enc_get_index’:
encoding.c:793:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (NIL_P(obj)) break;
     ^
encoding.c:794:7: note: here
       case T_DATA:
       ^~~~
encoding.c: In function ‘enc_capable’:
encoding.c:746:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (is_data_encoding(obj)) return TRUE;
     ^
encoding.c:747:7: note: here
       default:
       ^~~~~~~
compiling enum.c
In file included from enum.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling enumerator.c
In file included from enumerator.c:15:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling error.c
In file included from error.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling eval.c
In file included from eval.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
eval.c: In function ‘rb_raise_jump’:
eval.c:763:8: warning: unused variable ‘mid’ [-Wunused-variable]
     ID mid = me->called_id;
        ^~~
compiling load.c
In file included from load.c:5:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling proc.c
load.c: In function ‘search_required’:
load.c:922:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (ft) {
     ^
load.c:927:7: note: here
       case 1:
       ^~~~
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from proc.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling file.c
In file included from file.c:26:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
file.c: In function ‘rb_stat_dev_major’:
file.c:501:13: warning: In the GNU C Library, "major" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "major", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "major", you should undefine it after including <sys/types.h>.
     return INT2NUM(major(get_stat(self)->st_dev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
file.c: In function ‘rb_stat_dev_minor’:
file.c:522:13: warning: In the GNU C Library, "minor" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "minor", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "minor", you should undefine it after including <sys/types.h>.
     return INT2NUM(minor(get_stat(self)->st_dev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
file.c: In function ‘rb_stat_rdev_major’:
file.c:665:13: warning: In the GNU C Library, "major" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "major", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "major", you should undefine it after including <sys/types.h>.
     return DEVT2NUM(major(get_stat(self)->st_rdev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
file.c: In function ‘rb_stat_rdev_minor’:
file.c:686:13: warning: In the GNU C Library, "minor" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "minor", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "minor", you should undefine it after including <sys/types.h>.
     return DEVT2NUM(minor(get_stat(self)->st_rdev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compiling gc.c
In file included from gc.c:17:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling hash.c
In file included from hash.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
hash.c: In function ‘rb_hash_s_create’:
hash.c:658:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
       val = RARRAY_AREF(v, 1);
hash.c:659:5: note: here
     case 1:
     ^~~~
compiling inits.c
In file included from inits.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling io.c
In file included from io.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling marshal.c
In file included from marshal.c:16:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
marshal.c: In function ‘r_object0’:
marshal.c:1749:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (bs & 1) --dst;
       ^
marshal.c:1750:9: note: here
         default: bs = 0; break;
         ^~~~~~~
marshal.c: In function ‘load_mantissa’:
marshal.c:365:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
        default: m = *buf++ & 0xff;
                 ~~^~~~~~~~~~~~~~~
marshal.c:367:8: note: here
        case 3: m = (m << 8) | (*buf++ & 0xff);
        ^~~~
marshal.c:367:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
        case 3: m = (m << 8) | (*buf++ & 0xff);
                ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
marshal.c:370:8: note: here
        case 2: m = (m << 8) | (*buf++ & 0xff);
        ^~~~
marshal.c:370:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
        case 2: m = (m << 8) | (*buf++ & 0xff);
                ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
marshal.c:373:8: note: here
        case 1: m = (m << 8) | (*buf++ & 0xff);
        ^~~~
io.c: In function ‘rb_io_s_popen’:
io.c:6274:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
  pmode = argv[1];
  ~~~~~~^~~~~~~~~
io.c:6275:7: note: here
       case 1:
       ^~~~
compiling math.c
In file included from math.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling node.c
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from node.c:13:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling numeric.c
In file included from numeric.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling object.c
In file included from object.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
object.c: In function ‘rb_f_integer’:
object.c:2740:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  base = NUM2INT(argv[1]);
object.c:2741:7: note: here
       case 1:
       ^~~~
compiling pack.c
In file included from pack.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling parse.c
In file included from parse.y:27:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
parse.y: In function ‘ruby_yyparse’:
parse.y:3993:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
        node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node));
parse.y:3994:6: note: here
      case NODE_DSTR:
      ^~~~
parse.y:340:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define yyerror(msg) parser_yyerror(parser, (msg))
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
parse.y:5014:5: note: in expansion of macro ‘yyerror’
     yyerror("can't define singleton method for literals");
     ^~~~~~~
parse.y:5015:10: note: here
          default:
          ^~~~~~~
parse.y: In function ‘parser_yylex’:
parse.y:8223:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (peek('.') == (c == '&')) {
      ^
parse.y:8229:8: note: here
        default:
        ^~~~~~~
parse.y:8231:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
   lex_nextline = lex_lastline;
parse.y:8232:8: note: here
        case -1:  /* EOF no decrement*/
        ^~~~
parse.y:8577:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
  paren_nest--;
parse.y:8578:7: note: here
       case '}':
       ^~~~
parse.y: In function ‘parser_here_document’:
parse.y:6887:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
       if (--pend == p || pend[-1] != '\r') {
           ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
parse.y:6891:5: note: here
     case '\r':
     ^~~~
parse.y: In function ‘parser_read_escape’:
parse.y:6038:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ((c = nextc()) != '-') {
     ^
parse.y:6042:7: note: here
       case 'c':
       ^~~~
parse.y: In function ‘parse_gvar’:
parse.y:7945:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (!parser_is_identchar()) {
      ^
parse.y:7955:7: note: here
       case '0':
       ^~~~
parse.y: In function ‘is_static_content’:
parse.y:9760:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (!(node = node->nd_head)) break;
     ^
parse.y:9761:7: note: here
       case NODE_ARRAY:
       ^~~~
compiling process.c
In file included from process.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling random.c
In file included from random.c:62:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from random.c:1448:0:
siphash.c: In function ‘ruby_sip_hash24’:
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:444:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(6);
      ^~~~~~~
siphash.c:445:2: note: here
  case 6:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:446:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(5);
      ^~~~~~~
siphash.c:447:2: note: here
  case 5:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:448:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(4);
      ^~~~~~~
siphash.c:449:2: note: here
  case 4:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:461:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(2);
      ^~~~~~~
siphash.c:462:2: note: here
  case 2:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:463:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(1);
      ^~~~~~~
siphash.c:464:2: note: here
  case 1:
  ^~~~
random.c: In function ‘rand_range’:
random.c:1221:21: warning: this statement may fall through [-Wimplicit-fallthrough=]
       case T_FLOAT: {
                     ^
random.c:1227:7: note: here
       default:
       ^~~~~~~
random.c: In function ‘random_load’:
random.c:747:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  seed = ary[2];
  ~~~~~^~~~~~~~
random.c:748:7: note: here
       case 2:
       ^~~~
random.c:749:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  left = ary[1];
  ~~~~~^~~~~~~~
random.c:750:7: note: here
       case 1:
       ^~~~
compiling range.c
In file included from range.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling rational.c
In file included from rational.c:8:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling re.c
In file included from re.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
re.c: In function ‘unescape_nonascii’:
re.c:2310:17: warning: this statement may fall through [-Wimplicit-fallthrough=]
                 {
                 ^
re.c:2321:15: note: here
               case '0': /* \0, \0O, \0OO */
               ^~~~
re.c: In function ‘read_escaped_byte’:
re.c:2083:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
         if (p == end || *p++ != '-') {
             ~~~~~~~~~^~~~~~~~~~~~~~
re.c:2087:7: note: here
       case 'c': /* \cX, \c\M-X */
       ^~~~
compiling regcomp.c
compiling regenc.c
compiling regerror.c
compiling regexec.c
compiling regparse.c
regparse.c: In function ‘parse_enclose’:
regparse.c:5183:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
       if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_PERL)) {
          ^
regparse.c:5211:5: note: here
     case '-': case 'i': case 'm': case 's': case 'x':
     ^~~~
compiling regsyntax.c
compiling ruby.c
In file included from ruby.c:18:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ruby.c: In function ‘proc_options’:
ruby.c:856:20: warning: this statement may fall through [-Wimplicit-fallthrough=]
      opt->do_print = TRUE;
ruby.c:858:4: note: here
    case 'n':
    ^~~~
ruby.c:882:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
      opt->verbose = 1;
      ~~~~~~~~~~~~~^~~
ruby.c:883:4: note: here
    case 'w':
    ^~~~
ruby.c:1194:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (!s[1])
         ^
ruby.c:1197:4: note: here
    default:
    ^~~~~~~
compiling safe.c
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from safe.c:20:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling signal.c
In file included from signal.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling sprintf.c
In file included from sprintf.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
sprintf.c: In function ‘rb_str_format’:
sprintf.c:661:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
      p--;
      ~^~
sprintf.c:662:4: note: here
    case '%':
    ^~~~
In file included from sprintf.c:1278:0:
vsnprintf.c: In function ‘BSD_vfprintf’:
vsnprintf.c:886:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (prec != 0)
       ^
vsnprintf.c:888:3: note: here
   case 'g':
   ^~~~
compiling st.c
In file included from st.c:9:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
st.c: In function ‘st_hash’:
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:25: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                         ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^
st.c:1463:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                           ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                           ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^
st.c:1463:61: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                             ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:61: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                             ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^
st.c:1463:79: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                               ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:79: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                               ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^
st.c:1461:25: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                         ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1461:25: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                         ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^
st.c:1461:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                                           ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1461:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                                           ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^
st.c:1461:61: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                                                             ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
compiling strftime.c
strftime.c: In function ‘rb_strftime_with_timespec’:
strftime.c:780:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
    padding = '0';
    ~~~~~~~~^~~~~
strftime.c:781:3: note: here
   case '1':  case '2': case '3': case '4':
   ^~~~
compiling string.c
In file included from string.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling struct.c
In file included from struct.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling symbol.c
In file included from symbol.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling time.c
In file included from time.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
time.c: In function ‘utc_offset_arg’:
time.c:2092:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
      n += (s[7] * 10 + s[8] - '0' * 11);
      ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
time.c:2093:4: note: here
    case 6:
    ^~~~
compiling transcode.c
In file included from transcode.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling util.c
In file included from util.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
util.c: In function ‘ruby_strtod’:
util.c:2006:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
             sign = 1;
             ~~~~~^~~
util.c:2008:11: note: here
           case '+':
           ^~~~
util.c:2169:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
             esign = 1;
             ~~~~~~^~~
util.c:2170:11: note: here
           case '+':
           ^~~~
util.c: In function ‘ruby_dtoa’:
util.c:3344:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
         leftright = 0;
         ~~~~~~~~~~^~~
util.c:3346:7: note: here
       case 4:
       ^~~~
util.c:3352:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
         leftright = 0;
         ~~~~~~~~~~^~~
util.c:3354:7: note: here
       case 5:
       ^~~~
compiling variable.c
compiling version.c
In file included from variable.c:14:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling compile.c
In file included from compile.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compile.c: In function ‘iseq_compile_each’:
compile.c:4560:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
      boff = 1;
      ~~~~~^~~
compile.c:4561:4: note: here
    default:
    ^~~~~~~
compile.c:5015:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
      flag |= VM_CALL_VCALL;
compile.c:5017:4: note: here
    case NODE_FCALL:
    ^~~~
compile.c:4018:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (node->nd_var) {
     ^
compile.c:4044:7: note: here
       case NODE_ITER:{
       ^~~~
compile.c:4886:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (node->nd_mid == idAREF && !private_recv_p(node) && node->nd_args &&
     ^
compile.c:4902:7: note: here
       case NODE_QCALL:
       ^~~~
compile.c: In function ‘defined_expr0’:
compile.c:3329:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
       case NODE_ARRAY:{
                       ^
compile.c:3341:7: note: here
       case NODE_STR:
       ^~~~
compile.c: In function ‘iseq_peephole_optimize’:
compile.c:2251:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
       piobj = iobj;
       ~~~~~~^~~~~~
compile.c:2252:5: note: here
     default:
     ^~~~~~~
compiling debug.c
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from debug.c:16:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling iseq.c
In file included from iseq.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
iseq.c: In function ‘rb_insn_operand_intern’:
iseq.c:1279:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  op = ID2SYM(op);
iseq.c:1281:7: note: here
       case TS_VALUE:  /* VALUE */
       ^~~~
compiling vm.c
In file included from vm.c:15:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from vm.c:201:0:
vm_insnhelper.c: In function ‘check_method_entry’:
vm_insnhelper.c:389:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (can_be_svar) {
     ^
vm_insnhelper.c:392:7: note: here
       default:
       ^~~~~~~
In file included from vm_exec.c:120:0,
                 from vm.c:203:
insns.def: In function ‘vm_exec_core’:
insns.def:1262:21: warning: this statement may fall through [-Wimplicit-fallthrough=]
       case T_FLOAT: {
                     ^
insns.def:1268:7: note: here
       case T_TRUE:
       ^~~~
In file included from vm.c:201:0:
vm_insnhelper.c: In function ‘vm_defined’:
vm_insnhelper.c:2591:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (!rb_obj_is_kind_of(GET_SELF(), rb_class_real(klass))) {
      ^
vm_insnhelper.c:2594:8: note: here
        case METHOD_VISI_PUBLIC:
        ^~~~
In file included from vm.c:201:0:
vm_insnhelper.c: In function ‘check_cref’:
vm_insnhelper.c:440:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (can_be_svar) {
     ^
vm_insnhelper.c:443:7: note: here
       default:
       ^~~~~~~
In file included from vm.c:206:0:
vm_eval.c: In function ‘singleton_class_for_eval’:
vm_eval.c:1671:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (FL_TEST_RAW(self, RSTRING_FSTR)) return Qnil;
     ^
vm_eval.c:1672:7: note: here
       default:
       ^~~~~~~
In file included from vm.c:201:0:
vm_insnhelper.c: In function ‘cref_replace_with_duplicated_cref_each_frame’:
vm_insnhelper.c:510:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (can_be_svar) {
         ^
vm_insnhelper.c:513:4: note: here
    case imemo_ment:
    ^~~~
In function ‘iseq_build_kw.isra.59’,
    inlined from ‘rb_iseq_build_from_ary’ at compile.c:6690:30:
compile.c:6590:9: warning: argument 1 range [18446744071562067968, 18446744073709551615] exceeds maximum object size 9223372036854775807 [-Walloc-size-larger-than=]
     dvs = ALLOC_N(VALUE, default_len);
In file included from ./include/ruby/ruby.h:36:0,
                 from ./include/ruby.h:33,
                 from internal.h:15,
                 from compile.c:12:
compile.c: In function ‘rb_iseq_build_from_ary’:
./include/ruby/defines.h:109:18: note: in a call to allocation function ‘ruby_xmalloc2’ declared here
 #define xmalloc2 ruby_xmalloc2
                  ^
./include/ruby/defines.h:122:7: note: in expansion of macro ‘xmalloc2’
 void *xmalloc2(size_t,size_t) RUBY_ATTR_ALLOC_SIZE((1,2));
       ^~~~~~~~
compiling vm_dump.c
In file included from vm_dump.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling vm_backtrace.c
In file included from vm_backtrace.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling vm_trace.c
In file included from vm_trace.c:24:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling thread.c
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from ./include/ruby/ruby.h:36:0,
                 from eval_intern.h:4,
                 from thread.c:60:
thread.c: In function ‘rb_thread_fd_select’:
./include/ruby/defines.h:113:15: warning: ‘orig_except.fdset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define xfree ruby_xfree
               ^~~~~~~~~~
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
thread.c:3562:34: note: ‘orig_except.fdset’ was declared here
     rb_fdset_t UNINITIALIZED_VAR(orig_except);
                                  ^
internal.h:40:30: note: in definition of macro ‘UNINITIALIZED_VAR’
 #define UNINITIALIZED_VAR(x) x __attribute__((unused))
                              ^
In file included from ./include/ruby/ruby.h:36:0,
                 from eval_intern.h:4,
                 from thread.c:60:
./include/ruby/defines.h:113:15: warning: ‘orig_write.fdset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define xfree ruby_xfree
               ^~~~~~~~~~
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
thread.c:3561:34: note: ‘orig_write.fdset’ was declared here
     rb_fdset_t UNINITIALIZED_VAR(orig_write);
                                  ^
internal.h:40:30: note: in definition of macro ‘UNINITIALIZED_VAR’
 #define UNINITIALIZED_VAR(x) x __attribute__((unused))
                              ^
In file included from ./include/ruby/ruby.h:36:0,
                 from eval_intern.h:4,
                 from thread.c:60:
./include/ruby/defines.h:113:15: warning: ‘orig_read.fdset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define xfree ruby_xfree
               ^~~~~~~~~~
In file included from method.h:14:0,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
thread.c:3560:34: note: ‘orig_read.fdset’ was declared here
     rb_fdset_t UNINITIALIZED_VAR(orig_read);
                                  ^
internal.h:40:30: note: in definition of macro ‘UNINITIALIZED_VAR’
 #define UNINITIALIZED_VAR(x) x __attribute__((unused))
                              ^
compiling cont.c
In file included from cont.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling ./missing/setproctitle.c
compiling ./missing/strlcat.c
compiling ./missing/strlcpy.c
compiling addr2line.c
addr2line.c: In function ‘kvprintf’:
addr2line.c:960:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (!dot) {
       ^
addr2line.c:964:3: note: here
   case '1': case '2': case '3': case '4':
   ^~~~
addr2line.c:1100:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
    upper = 1;
    ~~~~~~^~~
addr2line.c:1101:3: note: here
   case 'x':
   ^~~~
compiling dmyenc.c
compiling dln.c
compiling localeinit.c
In file included from localeinit.c:12:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling prelude.c
In file included from prelude.c:7:0:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling enc/ascii.c
compiling enc/us_ascii.c
compiling enc/unicode.c
compiling enc/utf_8.c
compiling enc/trans/newline.c
linking miniruby
generating encdb.h
rbconfig.rb updated
generating enc.mk
encdb.h updated
creating verconf.h
verconf.h updated
compiling loadpath.c
making srcs under enc
make[1]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
make[1]: Nothing to be done for 'srcs'.
make[1]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
generating transdb.h
linking static-library libruby-static.a
ar: `u' modifier ignored since `D' is the default (see `U')
transdb.h updated
verifying static-library libruby-static.a
generating makefile exts.mk
making enc
make[1]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
compiling ./enc/encdb.c
configuring -test-/array/resize
configuring -test-/bignum
configuring -test-/bug-3571
configuring -test-/bug-5832
configuring -test-/bug_reporter
configuring -test-/class
configuring -test-/debug
configuring -test-/dln/empty
configuring -test-/exception
configuring -test-/fatal
configuring -test-/file
In file included from ./enc/encdb.c:12:0:
./internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
./internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling ./enc/big5.c
compiling ./enc/cp949.c
compiling ./enc/emacs_mule.c
compiling ./enc/euc_jp.c
compiling ./enc/euc_kr.c
compiling ./enc/euc_tw.c
compiling ./enc/gb2312.c
configuring -test-/float
configuring -test-/funcall
configuring -test-/gvl/call_without_gvl
configuring -test-/hash
configuring -test-/iseq_load
configuring -test-/iter
configuring -test-/load/dot.dot
configuring -test-/marshal/compat
configuring -test-/marshal/internal_ivar
compiling ./enc/gb18030.c
configuring -test-/marshal/usr
configuring -test-/method
configuring -test-/notimplement
configuring -test-/num2int
configuring -test-/path_to_class
configuring -test-/popen_deadlock
configuring -test-/postponed_job
configuring -test-/printf
configuring -test-/proc
configuring -test-/rational
configuring -test-/recursion
configuring -test-/st/foreach
configuring -test-/st/numhash
configuring -test-/st/update
configuring -test-/string
configuring -test-/struct
configuring -test-/symbol
compiling ./enc/gbk.c
configuring -test-/time
configuring -test-/tracepoint
configuring -test-/typeddata
configuring -test-/vm
configuring -test-/wait_for_single_fd
configuring bigdecimal
compiling ./enc/iso_8859_1.c
compiling ./enc/iso_8859_2.c
compiling ./enc/iso_8859_3.c
compiling ./enc/iso_8859_4.c
compiling ./enc/iso_8859_5.c
compiling ./enc/iso_8859_6.c
compiling ./enc/iso_8859_7.c
compiling ./enc/iso_8859_8.c
compiling ./enc/iso_8859_9.c
compiling ./enc/iso_8859_10.c
compiling ./enc/iso_8859_11.c
compiling ./enc/iso_8859_13.c
compiling ./enc/iso_8859_14.c
compiling ./enc/iso_8859_15.c
compiling ./enc/iso_8859_16.c
compiling ./enc/koi8_r.c
compiling ./enc/koi8_u.c
compiling ./enc/shift_jis.c
configuring cgi/escape
configuring continuation
configuring coverage
configuring date
configuring dbm
compiling ./enc/utf_16be.c
compiling ./enc/utf_16le.c
compiling ./enc/utf_32be.c
compiling ./enc/utf_32le.c
compiling ./enc/windows_31j.c
compiling ./enc/windows_1250.c
compiling ./enc/windows_1251.c
compiling ./enc/windows_1252.c
linking encoding encdb.so
linking encoding big5.so
linking encoding cp949.so
linking encoding emacs_mule.so
linking encoding euc_jp.so
linking encoding euc_kr.so
linking encoding euc_tw.so
linking encoding gb2312.so
linking encoding gb18030.so
linking encoding gbk.so
linking encoding iso_8859_1.so
linking encoding iso_8859_2.so
linking encoding iso_8859_3.so
linking encoding iso_8859_4.so
linking encoding iso_8859_5.so
linking encoding iso_8859_6.so
linking encoding iso_8859_7.so
linking encoding iso_8859_8.so
linking encoding iso_8859_9.so
linking encoding iso_8859_10.so
linking encoding iso_8859_11.so
linking encoding iso_8859_13.so
linking encoding iso_8859_14.so
linking encoding iso_8859_15.so
linking encoding iso_8859_16.so
linking encoding koi8_r.so
linking encoding koi8_u.so
linking encoding shift_jis.so
linking encoding utf_16be.so
linking encoding utf_16le.so
linking encoding utf_32be.so
linking encoding utf_32le.so
linking encoding windows_31j.so
linking encoding windows_1250.so
linking encoding windows_1251.so
linking encoding windows_1252.so
make[1]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
making trans
make[1]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
compiling ./enc/trans/transdb.c
compiling ./enc/trans/big5.c
Failed to configure dbm. It will not be installed.
configuring digest
configuring digest/bubblebabble
configuring digest/md5
configuring digest/rmd160
configuring digest/sha1
compiling ./enc/trans/chinese.c
configuring digest/sha2
compiling ./enc/trans/ebcdic.c
compiling ./enc/trans/emoji.c
compiling ./enc/trans/emoji_iso2022_kddi.c
configuring etc
compiling ./enc/trans/emoji_sjis_docomo.c
compiling ./enc/trans/emoji_sjis_kddi.c
compiling ./enc/trans/emoji_sjis_softbank.c
compiling ./enc/trans/escape.c
configuring fcntl
configuring fiber
configuring fiddle
compiling ./enc/trans/gb18030.c
compiling ./enc/trans/gbk.c
compiling ./enc/trans/iso2022.c
compiling ./enc/trans/japanese.c
compiling ./enc/trans/japanese_euc.c
compiling ./enc/trans/japanese_sjis.c
compiling ./enc/trans/korean.c
compiling ./enc/trans/single_byte.c
compiling ./enc/trans/utf8_mac.c
configuring gdbm
Failed to configure gdbm. It will not be installed.
configuring io/console
configuring io/nonblock
compiling ./enc/trans/utf_16_32.c
configuring io/wait
linking transcoder transdb.so
linking transcoder big5.so
configuring json
configuring json/generator
configuring json/parser
linking transcoder chinese.so
linking transcoder ebcdic.so
linking transcoder emoji.so
linking transcoder emoji_iso2022_kddi.so
linking transcoder emoji_sjis_docomo.so
linking transcoder emoji_sjis_kddi.so
linking transcoder emoji_sjis_softbank.so
linking transcoder escape.so
linking transcoder gb18030.so
linking transcoder gbk.so
linking transcoder iso2022.so
linking transcoder japanese.so
linking transcoder japanese_euc.so
linking transcoder japanese_sjis.so
linking transcoder korean.so
linking transcoder single_byte.so
linking transcoder utf8_mac.so
linking transcoder utf_16_32.so
make[1]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
making encs
make[1]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
make[1]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
configuring mathn/complex
configuring mathn/rational
configuring nkf
configuring objspace
configuring openssl
configuring pathname
configuring psych
configuring pty
configuring racc/cparse
configuring rbconfig/sizeof
configuring readline
configuring ripper
configuring sdbm
configuring socket
configuring stringio
configuring strscan
configuring syslog
configuring thread
configuring tk
............
check struct members..
check libraries....
Use ActiveTcl libraries (if available).
Search tclConfig.sh and tkConfig.sh..............................
Fail to find [tclConfig.sh, tkConfig.sh]
Use X11 libraries (or use TK_XINCLUDES/TK_XLIBSW information on tkConfig.sh).
Warning:: cannot find X11 library. tcltklib will not be compiled (tcltklib is disabled on your Ruby. That is, Ruby/Tk will not work). Please check configure options. If your Tcl/Tk don't require X11, please try --without-X11.
Can't find X11 libraries.
So, can't make tcltklib.so which is required by Ruby/Tk.
Failed to configure tk. It will not be installed.
Failed to configure tk/tkutil. It will not be installed.
configuring zlib
make[1]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/array/resize'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bignum'
compiling resize.c
compiling big2str.c
In file included from big2str.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
linking shared-object -test-/array/resize.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/array/resize'
compiling intpack.c
compiling div.c
In file included from intpack.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
In file included from div.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling bigzero.c
compiling mul.c
In file included from bigzero.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from mul.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling init.c
compiling str2big.c
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bug-3571'
compiling bug.c
In file included from str2big.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
linking shared-object -test-/bignum.so
linking shared-object -test-/bug-3571/bug.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bignum'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bug-5832'
compiling bug.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bug-3571'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bug_reporter'
compiling bug_reporter.c
linking shared-object -test-/bug-5832/bug.so
linking shared-object -test-/bug_reporter/bug_reporter.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bug-5832'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/class'
compiling init.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/bug_reporter'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/debug'
compiling init.c
compiling class2name.c
compiling profile_frames.c
linking shared-object -test-/class.so
compiling inspector.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/class'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/dln/empty'
compiling empty.c
linking shared-object -test-/dln/empty.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/dln/empty'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/exception'
compiling init.c
linking shared-object -test-/debug.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/debug'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/fatal'
compiling rb_fatal.c
compiling ensured.c
linking shared-object -test-/fatal/rb_fatal.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/fatal'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/file'
compiling fs.c
compiling dataerror.c
compiling stat.c
compiling enc_raise.c
linking shared-object -test-/exception.so
compiling init.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/exception'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/float'
compiling nextafter.c
linking shared-object -test-/file.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/file'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/funcall'
compiling passing_block.c
compiling init.c
linking shared-object -test-/float.so
linking shared-object -test-/funcall/funcall.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/funcall'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/gvl/call_without_gvl'
compiling call_without_gvl.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/float'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/hash'
compiling init.c
linking shared-object -test-/gvl/call_without_gvl.so
compiling delete.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/gvl/call_without_gvl'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/iseq_load'
compiling iseq_load.c
linking shared-object -test-/hash.so
linking shared-object -test-/iseq_load/iseq_load.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/hash'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/iter'
compiling yield.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/iseq_load'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/load/dot.dot'
compiling dot.dot.c
linking shared-object -test-/load/dot.dot/dot.dot.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/load/dot.dot'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/marshal/compat'
compiling usrcompat.c
compiling break.c
linking shared-object -test-/marshal/compat.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/marshal/compat'
compiling init.c
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/marshal/internal_ivar'
compiling internal_ivar.c
linking shared-object -test-/iter.so
linking shared-object -test-/marshal/internal_ivar.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/iter'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/marshal/usr'
compiling usrmarshal.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/marshal/internal_ivar'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/method'
compiling arity.c
linking shared-object -test-/marshal/usr.so
compiling init.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/marshal/usr'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/notimplement'
compiling bug.c
linking shared-object -test-/method.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/method'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/num2int'
compiling num2int.c
linking shared-object -test-/notimplement.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/notimplement'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/path_to_class'
compiling path_to_class.c
linking shared-object -test-/num2int/num2int.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/num2int'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/popen_deadlock'
compiling infinite_loop_dlsym.c
linking shared-object -test-/path_to_class/path_to_class.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/path_to_class'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/postponed_job'
compiling postponed_job.c
linking shared-object -test-/popen_deadlock/infinite_loop_dlsym.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/popen_deadlock'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/printf'
compiling printf.c
linking shared-object -test-/postponed_job.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/postponed_job'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/proc'
compiling super.c
linking shared-object -test-/printf.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/printf'
compiling init.c
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/rational'
compiling rat.c
In file included from rat.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling receiver.c
linking shared-object -test-/rational.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/rational'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/recursion'
compiling recursion.c
linking shared-object -test-/proc.so
linking shared-object -test-/recursion.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/recursion'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/st/foreach'
compiling foreach.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/proc'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/st/numhash'
compiling numhash.c
linking shared-object -test-/st/foreach.so
linking shared-object -test-/st/numhash.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/st/foreach'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/st/update'
compiling update.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/st/numhash'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/string'
compiling ellipsize.c
linking shared-object -test-/st/update.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/st/update'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/struct'
compiling duplicate.c
compiling nofree.c
compiling member.c
compiling normalize.c
compiling init.c
In file included from normalize.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling fstring.c
linking shared-object -test-/struct.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/struct'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/symbol'
compiling init.c
compiling type.c
compiling qsort.c
linking shared-object -test-/symbol.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/symbol'
compiling coderange.c
compiling init.c
compiling set_len.c
compiling cstr.c
In file included from cstr.c:1:0:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling modify.c
compiling enc_associate.c
compiling enc_str_buf_cat.c
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/time'
compiling init.c
linking shared-object -test-/string.so
compiling new.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/string'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/tracepoint'
compiling tracepoint.c
linking shared-object -test-/time.so
compiling gc_hook.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/time'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/typeddata'
compiling typeddata.c
linking shared-object -test-/tracepoint.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/tracepoint'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/vm'
compiling at_exit.c
linking shared-object -test-/typeddata/typeddata.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/typeddata'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/wait_for_single_fd'
compiling wait_for_single_fd.c
linking shared-object -test-/vm/at_exit.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/vm'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/bigdecimal'
compiling bigdecimal.c
linking shared-object -test-/wait_for_single_fd/wait_for_single_fd.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/-test-/wait_for_single_fd'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/cgi/escape'
compiling escape.c
linking shared-object cgi/escape.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/cgi/escape'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/continuation'
compiling continuation.c
linking shared-object continuation.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/continuation'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/coverage'
compiling coverage.c
In file included from ../../method.h:14:0,
                 from ../../vm_core.h:62,
                 from coverage.c:12:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
linking shared-object coverage.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/coverage'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/date'
compiling date_core.c
date_core.c: In function ‘datetime_s_jisx0301’:
date_core.c:8116:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:8117:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_httpdate’:
date_core.c:8086:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
date_core.c:8087:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_rfc2822’:
date_core.c:8056:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
date_core.c:8057:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_xmlschema’:
date_core.c:8025:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:8026:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_rfc3339’:
date_core.c:7995:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7996:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_iso8601’:
date_core.c:7965:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7966:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_parse’:
date_core.c:7925:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7926:7: note: here
       case 1:
       ^~~~
date_core.c:7927:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  comp = Qtrue;
date_core.c:7928:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘datetime_s_strptime’:
date_core.c:7882:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7883:7: note: here
       case 1:
       ^~~~
date_core.c:7884:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  fmt = rb_str_new2("%FT%T%z");
date_core.c:7885:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘datetime_s_commercial’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7445:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7446:7: note: here
       case 7:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7447:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7448:7: note: here
       case 6:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7449:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7450:7: note: here
       case 5:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7451:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 5);
  ^~~~~~~~~~~~~~~~~
date_core.c:7452:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7453:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 4);
  ^~~~~~~~~~~~~~~~~
date_core.c:7454:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7455:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7456:7: note: here
       case 2:
       ^~~~
date_core.c:7457:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  w = NUM2INT(vw);
date_core.c:7458:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_civil’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7348:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7349:7: note: here
       case 7:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7350:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7351:7: note: here
       case 6:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7352:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7353:7: note: here
       case 5:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7354:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 5);
  ^~~~~~~~~~~~~~~~~
date_core.c:7355:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7356:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 4);
  ^~~~~~~~~~~~~~~~~
date_core.c:7357:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7358:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7359:7: note: here
       case 2:
       ^~~~
date_core.c:7360:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  m = NUM2INT(vm);
date_core.c:7361:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_ordinal’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7271:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7272:7: note: here
       case 6:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7273:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7274:7: note: here
       case 5:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7275:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7276:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7277:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 4);
  ^~~~~~~~~~~~~~~~~
date_core.c:7278:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7279:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7280:7: note: here
       case 2:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7281:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, 2);
  ^~~~~~~~~~~~~~~~~
date_core.c:7282:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_jd’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7202:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7203:7: note: here
       case 5:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7204:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7205:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7206:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7207:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7208:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7209:7: note: here
       case 2:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7210:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 2);
  ^~~~~~~~~~~~~~~~~
date_core.c:7211:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_jisx0301’:
date_core.c:4631:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4632:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_httpdate’:
date_core.c:4590:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
date_core.c:4591:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_rfc2822’:
date_core.c:4548:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
date_core.c:4549:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_xmlschema’:
date_core.c:4504:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4505:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_rfc3339’:
date_core.c:4463:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:4464:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_iso8601’:
date_core.c:4422:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4423:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_parse’:
date_core.c:4366:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4367:7: note: here
       case 1:
       ^~~~
date_core.c:4368:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  comp = Qtrue;
date_core.c:4369:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘date_s_strptime’:
date_core.c:4275:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4276:7: note: here
       case 1:
       ^~~~
date_core.c:4277:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  fmt = rb_str_new2("%F");
date_core.c:4278:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘date_s_commercial’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3480:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3481:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:3482:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:3483:7: note: here
       case 2:
       ^~~~
date_core.c:3484:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  w = NUM2INT(vw);
date_core.c:3485:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_civil’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3403:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3404:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:3405:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:3406:7: note: here
       case 2:
       ^~~~
date_core.c:3407:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  m = NUM2INT(vm);
date_core.c:3408:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_ordinal’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3334:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3335:7: note: here
       case 2:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:3336:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:3337:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_jd’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3282:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3283:7: note: here
       case 1:
       ^~~~
linking shared-object bigdecimal.so
installing default bigdecimal libraries
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/bigdecimal'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/dbm'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/dbm'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest'
compiling digest.c
linking shared-object digest.so
installing digest libraries
installing default digest libraries
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/bubblebabble'
compiling bubblebabble.c
linking shared-object digest/bubblebabble.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/bubblebabble'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/md5'
compiling md5init.c
linking shared-object digest/md5.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/md5'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/rmd160'
compiling rmd160init.c
linking shared-object digest/rmd160.so
compiling date_strftime.c
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/rmd160'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/sha1'
compiling sha1init.c
date_strftime.c: In function ‘date_strftime_with_tmx’:
date_strftime.c:573:14: warning: this statement may fall through [-Wimplicit-fallthrough=]
      padding = '0';
      ~~~~~~~~^~~~~
date_strftime.c:574:4: note: here
    case '1':  case '2': case '3': case '4':
    ^~~~
linking shared-object digest/sha1.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/sha1'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/sha2'
compiling sha2init.c
linking shared-object digest/sha2.so
installing default sha2 libraries
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/digest/sha2'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/etc'
generating constant definitions
compiling etc.c
compiling date_strptime.c
linking shared-object etc.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/etc'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fcntl'
compiling fcntl.c
linking shared-object fcntl.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fcntl'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiber'
compiling fiber.c
linking shared-object fiber.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiber'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle'
compiling handle.c
compiling date_parse.c
compiling closure.c
compiling conversions.c
compiling fiddle.c
compiling function.c
compiling pointer.c
make[3]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle'
make[3]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
make 'AR_FLAGS=' 'CC_FOR_BUILD=' 'CFLAGS=-O3 -fno-fast-math -ggdb3  -Wall -fexceptions' 'CXXFLAGS=-O3 -fno-fast-math -ggdb3 ' 'CFLAGS_FOR_BUILD=' 'CFLAGS_FOR_TARGET=' 'INSTALL=/usr/bin/install -c' 'INSTALL_DATA=/usr/bin/install -c -m 644' 'INSTALL_PROGRAM=/usr/bin/install -c' 'INSTALL_SCRIPT=/usr/bin/install -c' 'JC1FLAGS=' 'LDFLAGS=-L. -L/home/brb/.rbenv/versions/2.3.4/lib  -fstack-protector -rdynamic -Wl,-export-dynamic  -L../../.. ' 'LIBCFLAGS=' 'LIBCFLAGS_FOR_TARGET=' 'MAKE=make' 'MAKEINFO=/bin/bash /tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/missing makeinfo ' 'PICFLAG=' 'PICFLAG_FOR_TARGET=' 'RUNTESTFLAGS=' 'SHELL=/bin/bash' 'exec_prefix=/usr/local' 'infodir=/usr/local/share/info' 'libdir=/home/brb/.rbenv/versions/2.3.4/lib' 'mandir=/usr/local/share/man' 'prefix=/usr/local' 'AR=ar' 'AS=as' 'CC=gcc' 'CXX=g++' 'LD=ld -m elf_x86_64' 'NM=nm' 'RANLIB=ranlib' 'DESTDIR=' all-recursive
make[4]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1'
Making all in include
make[5]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/include'
make[5]: Nothing to be done for 'all'.
make[5]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/include'
Making all in testsuite
make[5]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/testsuite'
make[5]: Nothing to be done for 'all'.
make[5]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/testsuite'
Making all in man
make[5]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/man'
make[5]: Nothing to be done for 'all'.
make[5]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1/man'
make[5]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1'
  CC       src/prep_cif.lo
  CC       src/types.lo
  CC       src/raw_api.lo
  CC       src/java_raw_api.lo
  CC       src/closures.lo
installing default date_core libraries
linking shared-object date_core.so
src/closures.c: In function 'dlmmap_locked':
src/closures.c:488:7: warning: ignoring return value of 'ftruncate', declared with attribute warn_unused_result [-Wunused-result]
       ftruncate (execfd, offset);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~
src/closures.c:500:7: warning: ignoring return value of 'ftruncate', declared with attribute warn_unused_result [-Wunused-result]
       ftruncate (execfd, offset);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/date'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/gdbm'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/gdbm'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/io/console'
compiling console.c
linking shared-object io/console.so
installing default console libraries
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/io/console'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/io/nonblock'
compiling nonblock.c
linking shared-object io/nonblock.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/io/nonblock'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/io/wait'
compiling wait.c
linking shared-object io/wait.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/io/wait'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/json'
installing default libraries
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/json'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/json/generator'
compiling generator.c
generator.c: In function ‘convert_UTF8_to_JSON_ASCII’:
generator.c:148:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
                                      ~~~^~~~~
generator.c:149:13: note: here
             case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
             ^~~~
generator.c:149:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
                                      ~~~^~~~~
generator.c:150:13: note: here
             case 3: ch += *source++; ch <<= 6;
             ^~~~
generator.c:150:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 3: ch += *source++; ch <<= 6;
                                      ~~~^~~~~
generator.c:151:13: note: here
             case 2: ch += *source++; ch <<= 6;
             ^~~~
generator.c:151:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 2: ch += *source++; ch <<= 6;
                                      ~~~^~~~~
generator.c:152:13: note: here
             case 1: ch += *source++; ch <<= 6;
             ^~~~
generator.c:152:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 1: ch += *source++; ch <<= 6;
                                      ~~~^~~~~
generator.c:153:13: note: here
             case 0: ch += *source++;
             ^~~~
generator.c: In function ‘isLegalUTF8’:
generator.c:86:46: warning: this statement may fall through [-Wimplicit-fallthrough=]
         case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
                     ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
generator.c:87:9: note: here
         case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
         ^~~~
generator.c:87:46: warning: this statement may fall through [-Wimplicit-fallthrough=]
         case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
                     ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
generator.c:88:9: note: here
         case 2: if ((a = (*--srcptr)) > 0xBF) return 0;
         ^~~~
generator.c:96:39: warning: this statement may fall through [-Wimplicit-fallthrough=]
                         default:   if (a < 0x80) return 0;
                                       ^
generator.c:99:9: note: here
         case 1: if (*source >= 0x80 && *source < 0xC2) return 0;
         ^~~~
  CC       src/x86/ffi64.lo
linking shared-object json/ext/generator.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/json/generator'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/json/parser'
compiling parser.c
  CPPAS    src/x86/unix64.lo
parser.c: In function ‘cParser_parse_quirks_mode’:
parser.c:1968:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1970:1: note: here
 case 1:
 ^~~~
parser.rl:803:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
             begin_value >parse_value
     ^
parser.rl:805:1: note: here
 }%%
 ^~~
parser.c:2015:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2017:1: note: here
 case 2:
 ^~~~
parser.c:2024:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2026:1: note: here
 case 3:
 ^~~~
parser.c:2031:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2033:1: note: here
 case 4:
 ^~~~
parser.c:2040:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2042:1: note: here
 case 5:
 ^~~~
parser.c:2047:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2049:1: note: here
 case 6:
 ^~~~
parser.c:2056:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2058:1: note: here
 case 7:
 ^~~~
parser.c:2063:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2065:1: note: here
 case 8:
 ^~~~
parser.c:2072:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2074:1: note: here
 case 9:
 ^~~~
parser.c: In function ‘JSON_parse_value’:
parser.rl:227:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
             *result = CNaN;
     ^
parser.rl:229:1: note: here
             rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p - 2);
 ^
parser.c:630:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:632:1: note: here
 case 2:
 ^~~~
parser.c:637:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:639:1: note: here
 case 3:
 ^~~~
parser.c:644:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:646:1: note: here
 case 4:
 ^~~~
parser.c:651:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:653:1: note: here
 case 5:
 ^~~~
parser.c:658:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:660:1: note: here
 case 6:
 ^~~~
parser.c:665:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:667:1: note: here
 case 7:
 ^~~~
parser.c:672:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:674:1: note: here
 case 8:
 ^~~~
parser.c:679:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:681:1: note: here
 case 9:
 ^~~~
parser.c:686:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:688:1: note: here
 case 10:
 ^~~~
parser.c:693:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:695:1: note: here
 case 11:
 ^~~~
parser.c:700:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:702:1: note: here
 case 12:
 ^~~~
parser.c:707:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:709:1: note: here
 case 13:
 ^~~~
parser.c:714:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:716:1: note: here
 case 14:
 ^~~~
parser.c:721:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:723:1: note: here
 case 15:
 ^~~~
parser.c:728:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:730:1: note: here
 case 16:
 ^~~~
parser.c:735:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:737:1: note: here
 case 17:
 ^~~~
parser.c:742:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:744:1: note: here
 case 18:
 ^~~~
parser.c:749:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:751:1: note: here
 case 19:
 ^~~~
parser.c:756:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:758:1: note: here
 case 20:
 ^~~~
parser.c: In function ‘JSON_parse_string’:
parser.c:1447:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1449:1: note: here
 case 2:
 ^~~~
parser.c:1479:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1481:1: note: here
 case 3:
 ^~~~
parser.c:1488:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1490:1: note: here
 case 4:
 ^~~~
parser.c:1501:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1503:1: note: here
 case 5:
 ^~~~
parser.c:1514:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1516:1: note: here
 case 6:
 ^~~~
parser.c:1527:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1529:1: note: here
 case 7:
 ^~~~
parser.c: In function ‘JSON_parse_float’:
parser.c:939:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:941:1: note: here
 case 2:
 ^~~~
parser.c:948:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:950:1: note: here
 case 3:
 ^~~~
parser.c:958:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:960:1: note: here
 case 4:
 ^~~~
parser.c:965:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:967:1: note: here
 case 8:
 ^~~~
parser.c:989:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:991:1: note: here
 case 5:
 ^~~~
parser.c:1000:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1002:1: note: here
 case 6:
 ^~~~
parser.c:1007:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1009:1: note: here
 case 10:
 ^~~~
parser.c:1021:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1023:1: note: here
 case 7:
 ^~~~
parser.c: In function ‘JSON_parse_integer’:
parser.c:840:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:842:1: note: here
 case 2:
 ^~~~
parser.c:849:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:851:1: note: here
 case 3:
 ^~~~
parser.c:866:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:868:1: note: here
 case 5:
 ^~~~
parser.c: In function ‘JSON_parse_array’:
parser.c:1106:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1108:1: note: here
 case 2:
 ^~~~
parser.rl:394:5: warning: this statement may fall through [-Wimplicit-fallthrough=]

     ^
parser.rl:396:1: note: here

 ^
parser.c:1163:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1165:1: note: here
 case 4:
 ^~~~
parser.c:1187:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1189:1: note: here
 case 5:
 ^~~~
parser.c:1196:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1198:1: note: here
 case 6:
 ^~~~
parser.c:1203:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1205:1: note: here
 case 7:
 ^~~~
parser.c:1212:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1214:1: note: here
 case 8:
 ^~~~
parser.c:1219:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1221:1: note: here
 case 9:
 ^~~~
parser.c:1228:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1230:1: note: here
 case 10:
 ^~~~
parser.c:1235:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1237:1: note: here
 case 11:
 ^~~~
parser.c:1244:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1246:1: note: here
 case 12:
 ^~~~
parser.c:1261:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1263:1: note: here
 case 13:
 ^~~~
parser.c:1270:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1272:1: note: here
 case 14:
 ^~~~
parser.c:1277:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1279:1: note: here
 case 15:
 ^~~~
parser.c:1286:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1288:1: note: here
 case 16:
 ^~~~
parser.c: In function ‘JSON_parse_object’:
parser.c:156:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:158:1: note: here
 case 2:
 ^~~~
parser.rl:162:5: warning: this statement may fall through [-Wimplicit-fallthrough=]

     ^
parser.rl:164:1: note: here
     next_pair   = ignore* value_separator pair;
 ^
parser.c:194:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:196:1: note: here
 case 4:
 ^~~~
parser.c:203:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:205:1: note: here
 case 5:
 ^~~~
parser.c:210:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:212:1: note: here
 case 6:
 ^~~~
parser.c:219:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:221:1: note: here
 case 7:
 ^~~~
parser.c:226:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:228:1: note: here
 case 8:
 ^~~~
parser.rl:154:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
         char *np;
     ^
parser.rl:156:1: note: here
         np = JSON_parse_string(json, fpc, pe, &last_name);
 ^
parser.c:282:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:284:1: note: here
 case 10:
 ^~~~
parser.c:295:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:297:1: note: here
 case 11:
 ^~~~
parser.c:304:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:306:1: note: here
 case 12:
 ^~~~
parser.c:311:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:313:1: note: here
 case 13:
 ^~~~
parser.c:320:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:322:1: note: here
 case 14:
 ^~~~
parser.c:327:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:329:1: note: here
 case 15:
 ^~~~
parser.c:336:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:338:1: note: here
 case 16:
 ^~~~
parser.c:343:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:345:1: note: here
 case 17:
 ^~~~
parser.c:352:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:354:1: note: here
 case 18:
 ^~~~
parser.c:369:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:371:1: note: here
 case 19:
 ^~~~
parser.c:378:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:380:1: note: here
 case 20:
 ^~~~
parser.c:385:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:387:1: note: here
 case 21:
 ^~~~
parser.c:394:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:396:1: note: here
 case 22:
 ^~~~
parser.c:401:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:403:1: note: here
 case 23:
 ^~~~
parser.c:410:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:412:1: note: here
 case 24:
 ^~~~
parser.c:417:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:419:1: note: here
 case 25:
 ^~~~
parser.c:426:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:428:1: note: here
 case 26:
 ^~~~
parser.c: In function ‘cParser_parse_strict’:
parser.c:1794:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1796:1: note: here
 case 1:
 ^~~~
parser.c:1811:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1813:1: note: here
 case 2:
 ^~~~
parser.c:1820:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1822:1: note: here
 case 3:
 ^~~~
parser.c:1827:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1829:1: note: here
 case 4:
 ^~~~
parser.c:1836:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1838:1: note: here
 case 5:
 ^~~~
parser.rl:757:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
         char *np;
     ^
parser.rl:759:1: note: here
         np = JSON_parse_array(json, fpc, pe, &result);
 ^
parser.c:1874:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1876:1: note: here
 case 6:
 ^~~~
parser.c:1883:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1885:1: note: here
 case 7:
 ^~~~
parser.c:1890:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1892:1: note: here
 case 8:
 ^~~~
parser.c:1899:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1901:1: note: here
 case 9:
 ^~~~
  CC       src/x86/ffi.lo
  CPPAS    src/x86/sysv.lo
  CCLD     libffi_convenience.la
ar: `u' modifier ignored since `D' is the default (see `U')
  CCLD     libffi.la
linking shared-object json/ext/parser.so
ar: `u' modifier ignored since `D' is the default (see `U')
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/json/parser'
make[5]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1'
make[4]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1'
make[3]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle/libffi-3.2.1'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/mathn/complex'
compiling complex.c
linking shared-object fiddle.so
linking shared-object mathn/complex.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/mathn/complex'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/mathn/rational'
compiling rational.c
installing default fiddle libraries
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/fiddle'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/nkf'
compiling nkf.c
linking shared-object mathn/rational.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/mathn/rational'
installing default nkf libraries
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/objspace'
compiling objspace.c
In file included from objspace.c:15:0:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from nkf.c:62:0:
nkf-utf8/nkf.c: In function ‘module_connection’:
nkf-utf8/nkf.c:5710:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
     if (nkf_enc_unicode_p(output_encoding))
     ^~
nkf-utf8/nkf.c:5713:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
  if (x0201_f == NKF_UNSPECIFIED) {
  ^~
nkf-utf8/nkf.c: In function ‘options’:
nkf-utf8/nkf.c:6807:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
      fold_preserve_f = TRUE;
nkf-utf8/nkf.c:6808:2: note: here
  case 'f':   /* folding -f60 or -f */
  ^~~~
In file included from nkf.c:62:0:
nkf-utf8/nkf.c: In function ‘set_input_encoding’:
nkf-utf8/nkf.c:1238:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (x0201_f == NKF_UNSPECIFIED) x0201_f = FALSE; /* -x specified implicitly */
     ^
nkf-utf8/nkf.c:1239:5: note: here
     case CP50220:
     ^~~~
compiling object_tracing.c
In file included from object_tracing.c:16:0:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling objspace_dump.c
In file included from objspace_dump.c:15:0:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
linking shared-object objspace.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/objspace'
make[2]: Entering directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/openssl'
compiling ossl_bio.c
In file included from ossl.h:57:0,
                 from ossl_bio.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
In file included from ossl.h:222:0,
                 from ossl_bio.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:23:0,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_bio.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^
In file included from ossl.h:236:0,
                 from ossl_bio.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
Makefile:301: recipe for target 'ossl_bio.o' failed
make[2]: *** [ossl_bio.o] Error 1
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/openssl'
exts.mk:209: recipe for target 'ext/openssl/all' failed
make[1]: *** [ext/openssl/all] Error 2
make[1]: *** Waiting for unfinished jobs....
linking shared-object nkf.so
make[2]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4/ext/nkf'
make[1]: Leaving directory '/tmp/ruby-build.20180503115650.31025/ruby-2.3.4'
uncommon.mk:203: recipe for target 'build-ext' failed
make: *** [build-ext] Error 2