In file included from src/peg.c:49:0:
src/peg.peg-c: In function ‘yy_Sequence’:
src/peg.peg-c:380:3: warning: label ‘l77’ defined but not used [-Wunused-label]
 #define __ yy->__
   ^~~
In file included from src/peg.c:49:0:
At top level:
src/peg.peg-c:269:16: warning: ‘yySet’ defined but not used [-Wunused-function]
 YY_LOCAL(void) yySet(yycontext *yy, char *text, int count)   { yy->__val[count]= yy->__; }
                ^~~~~
src/peg.peg-c:268:16: warning: ‘yyPop’ defined but not used [-Wunused-function]
 YY_LOCAL(void) yyPop(yycontext *yy, char *text, int count)   { yy->__val -= count; }
                ^~~~~
src/peg.peg-c:257:16: warning: ‘yyPush’ defined but not used [-Wunused-function]
 YY_LOCAL(void) yyPush(yycontext *yy, char *text, int count)
                ^~~~~~
src/leg.leg: In function ‘main’:
src/leg.leg:314:23: warning: too many arguments for format [-Wformat-extra-args]
       fprintf(output, "#line %i \"%s\"\n", trailerLine, fileName, trailer);
                       ^~~~~~~~~~~~~~~~~~~
At top level:
src/leg.leg:329:16: warning: ‘yySet’ defined but not used [-Wunused-function]
src/leg.leg:328:16: warning: ‘yyPop’ defined but not used [-Wunused-function]
src/leg.leg:317:16: warning: ‘yyPush’ defined but not used [-Wunused-function]
 
                ^     
src/leg.leg:302:15: warning: ‘yyAccept’ defined but not used [-Wunused-function]
       Rule_print(n);
               ^~~~~~  
peg/0.1.18 (test package): WARN: This conanfile has no build step