Crash log from clang compilation attempt.

Process:         clang [75854]
Path:            /opt/local/libexec/llvm-3.7/bin/clang
Identifier:      clang
Version:         3.7.1 ()
Code Type:       X86-64 (Native)
Parent Process:  clang [75846]

Date/Time:       2016-07-26 22:54:19.174 -0400
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000012011faa9
Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   libLLVM-3.7.dylib             	0x00000001022eb812 llvm::SmallPtrSetImplBase::FindBucketFor(void const*) const + 32
1   libLLVM-3.7.dylib             	0x00000001022eb6f2 llvm::SmallPtrSetImplBase::insert_imp(void const*) + 132
2   clang                         	0x00000001000684fe llvm::SmallPtrSetImpl<clang::DirectoryEntry const*>::insert(clang::DirectoryEntry const*) + 26
3   clang                         	0x00000001000672c4 RemoveDuplicates(std::__1::vector<clang::DirectoryLookup, std::__1::allocator<clang::DirectoryLookup> >&, unsigned int, bool) + 301
4   clang                         	0x0000000100066175 clang::ApplyHeaderSearchOptions(clang::HeaderSearch&, clang::HeaderSearchOptions const&, clang::LangOptions const&, llvm::Triple const&) + 4709
5   clang                         	0x0000000100030238 clang::CompilerInstance::createPreprocessor(clang::TranslationUnitKind) + 1528
6   clang                         	0x000000010005a6e2 clang::FrontendAction::BeginSourceFile(clang::CompilerInstance&, clang::FrontendInputFile const&) + 2312
7   clang                         	0x0000000100032b4d clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 447
8   clang                         	0x000000010000a999 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 3985
9   clang                         	0x00000001000031f2 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) + 1126
10  clang                         	0x0000000100009266 main + 7917
11  clang                         	0x0000000100002d84 start + 52

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x000000012011faa9  rbx: 0x00007fff5fbfa6e0  rcx: 0x000000000400bb17  rdx: 0x0000000004002116
  rdi: 0x00007fff5fbfa6e0  rsi: 0x00007fff5fbfa828  rbp: 0x00007fff5fbfa6b0  rsp: 0x00007fff5fbfa6a8
   r8: 0x00007fff5fbfa788   r9: 0x00000001040fc0a4  r10: 0x00000001030ce111  r11: 0x000000010010f1f9
  r12: 0x000000010400bd00  r13: 0x000000010400bb10  r14: 0x00007fff5fbfa828  r15: 0x0000000000000000
  rip: 0x00000001022eb812  rfl: 0x0000000000010202  cr2: 0x000000012011faa9

Binary Images:
       0x100000000 -        0x100ca8fff +clang 3.7.1 () <5CE25587-64E8-3C57-AEE0-13360ED3B48E> /opt/local/libexec/llvm-3.7/bin/clang
       0x10170f000 -        0x102d57ff7 +libLLVM-3.7.dylib ??? (???) <2DA8B0A9-8ED8-3DE0-A995-602B90A0D729> /opt/local/libexec/llvm-3.7/lib/libLLVM-3.7.dylib
       0x103cb5000 -        0x103cc6ff7 +libz.1.dylib 1.2.8 (compatibility 1.0.0) <73085522-1107-8770-A0D9-365B42638530> /opt/local/lib/libz.1.dylib
       0x103cca000 -        0x103ccfff7 +libffi.6.dylib 7.4.0 (compatibility 7.0.0) <DD598F23-C71A-D211-401C-9631685FFD01> /opt/local/lib/libffi.6.dylib
       0x103cd2000 -        0x103cf5ff7 +libedit.0.dylib 1.54.0 (compatibility 1.0.0) <B8135595-1B52-3BE5-A735-C955EF1D6F75> /opt/local/lib/libedit.0.dylib
       0x103d03000 -        0x103d4eff7 +libncurses.6.dylib 6.0.0 (compatibility 6.0.0) <8C101283-2B37-BCFB-4123-4C9C0D09B078> /opt/local/lib/libncurses.6.dylib
       0x103d5f000 -        0x103dcffff  libc++.1.dylib 3.7.1 (compatibility 1.0.0) <C2BB6F11-E452-3890-86F1-AFAC2275F355> /usr/lib/libc++.1.dylib
       0x103e83000 -        0x103ed7ff7  libc++abi.dylib 3.7.0 (compatibility 1.0.0) <C59B2FB0-47B3-3FF8-92EA-F68ACFF94471> /usr/lib/libc++abi.dylib
    0x7fff5fc00000 -     0x7fff5fc3be0f  dyld 132.1 (???) <29DECB19-0193-2575-D838-CF743F0400B2> /usr/lib/dyld
    0x7fff87528000 -     0x7fff876e9fef  libSystem.B.dylib 125.2.11 (compatibility 1.0.0) <9AB4F1D1-89DC-0E8A-DC8E-A4FE4D69DB69> /usr/lib/libSystem.B.dylib
    0x7fff88658000 -     0x7fff8865cff7  libmathCommon.A.dylib 315.0.0 (compatibility 1.0.0) <95718673-FEEE-B6ED-B127-BCDBDB60D4E5> /usr/lib/system/libmathCommon.A.dylib
    0x7fffffe00000 -     0x7fffffe01fff  libSystem.B.dylib ??? (???) <9AB4F1D1-89DC-0E8A-DC8E-A4FE4D69DB69> /usr/lib/libSystem.B.dylib