https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117911
Sam James <sjames at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|NEW |RESOLVED --- Comment #9 from Sam James <sjames at gcc dot gnu.org> --- I'm afraid I think it's invalid. If I mangle the testcase slightly to build with Clang, I see with Valgrind too: ==14457== ==14457== Invalid read of size 4 ==14457== at 0x112A17: func_2 (b.c:3193) ==14457== by 0x110524: func_1 (b.c:2654) ==14457== by 0x10FBE1: main (b.c:4439) ==14457== Address 0x1ffeffd51c is on thread 1's stack ==14457== 2436 bytes below stack pointer Ditto gcc -O0.