json.l: In function 'yylex':
json.l:26:11: warning: assignment to 'YYSTYPE' {aka 'int'} from 'char *' makes integer from pointer without a cast [-Wint-conversion]
     yylval=strclone(yytext);
           ^
json.l:30:11: warning: assignment to 'YYSTYPE' {aka 'int'} from 'char *' makes integer from pointer without a cast [-Wint-conversion]
     yylval=strclone(yytext);
           ^
y.tab.c: In function 'yyparse':
y.tab.c:627:16: warning: implicit declaration of function 'yylex' [-Wimplicit-function-declaration]
 # define YYLEX yylex ()
                ^~~~~
y.tab.c:1272:16: note: in expansion of macro 'YYLEX'
       yychar = YYLEX;
                ^~~~~
y.tab.c:1540:7: warning: implicit declaration of function 'yyerror'; did you mean 'yyerrok'? [-Wimplicit-function-declaration]
       yyerror (YY_("syntax error"));
       ^~~~~~~
       yyerrok
json.y: At top level:
json.y:80:6: warning: conflicting types for 'yyerror'
 void yyerror (char const *s) {
      ^~~~~~~
y.tab.c:1540:7: note: previous implicit declaration of 'yyerror' was here
       yyerror (YY_("syntax error"));
       ^~~~~~~