https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99623
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Goes away with -fno-strict-aliasing and -Wstrict-aliasing=2 warns about it:
bug.c: In function ‘prb_probe’:
bug.c:105:42: warning: dereferencing type-punned pointer might break
strict-aliasing rules [-Wstrict-aliasing]
bug.c:139:42: warning: dereferencing type-punned pointer might break
strict-aliasing rules [-Wstrict-aliasing]
bug.c: In function ‘myprb_probe’:
bug.c:251:44: warning: dereferencing type-punned pointer might break
strict-aliasing rules [-Wstrict-aliasing]
bug.c:285:44: warning: dereferencing type-punned pointer might break
strict-aliasing rules [-Wstrict-aliasing]
bug.c: In function ‘compare’:
bug.c:375:9: warning: format ‘%d’ expects argument of type ‘int’, but argument
2 has type ‘size_t’ {aka ‘long unsigned int’} [-Wformat=]
bug.c:375:9: warning: format ‘%d’ expects argument of type ‘int’, but argument
3 has type ‘size_t’ {aka ‘long unsigned int’} [-Wformat=]
I bet the program is invalid, just don't have time to prove it now.
