In file included from src/peg.c:49:
src/peg.peg-c:380:3: warning: unused label 'l77' [-Wunused-label]
  l77:;   yy->__pos= yypos0; yy->__thunkpos= yythunkpos0;
  ^~~~
src/peg.peg-c:257:16: warning: unused function 'yyPush' [-Wunused-function]
YY_LOCAL(void) yyPush(yycontext *yy, char *text, int count)
               ^
src/peg.peg-c:268:16: warning: unused function 'yyPop' [-Wunused-function]
YY_LOCAL(void) yyPop(yycontext *yy, char *text, int count)   { yy->__val -= count; }
               ^
src/peg.peg-c:269:16: warning: unused function 'yySet' [-Wunused-function]
YY_LOCAL(void) yySet(yycontext *yy, char *text, int count)   { yy->__val[count]= yy->__; }
               ^
4 warnings generated.
src/leg.leg:314:67: warning: data argument not used by format string [-Wformat-extra-args]
      fprintf(output, "#line %i \"%s\"\n", trailerLine, fileName, trailer);
                      ~~~~~~~~~~~~~~~~~~~                         ^
src/leg.leg:302:15: warning: unused function 'yyAccept' [-Wunused-function]
YY_LOCAL(int) yyAccept(yycontext *yy, int tp0)
              ^
src/leg.leg:317:16: warning: unused function 'yyPush' [-Wunused-function]
YY_LOCAL(void) yyPush(yycontext *yy, char *text, int count)
               ^
src/leg.leg:328:16: warning: unused function 'yyPop' [-Wunused-function]
YY_LOCAL(void) yyPop(yycontext *yy, char *text, int count)   { yy->__val -= count; }
               ^
src/leg.leg:329:16: warning: unused function 'yySet' [-Wunused-function]
YY_LOCAL(void) yySet(yycontext *yy, char *text, int count)   { yy->__val[count]= yy->__; }
               ^
5 warnings generated.
peg/0.1.18 (test package): WARN: This conanfile has no build step