https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110391
--- Comment #3 from Zhendong Su <zhendong.su at inf dot ethz.ch> --- Another related reproducer. Compiler Explorer: https://godbolt.org/z/E8GPcfPY5 [543] % gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/local/home/suz/suz-local/software/local/gcc-trunk/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=c,c++ --disable-werror --disable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20230629 (experimental) [master r14-924-gd709841ae0f] (GCC) [544] % [544] % gcctk -O2 -fselective-scheduling2 small.c [545] % timeout -s 9 5 ./a.out Killed [546] % [546] % gcctk -O1 small.c; ./a.out [547] % [547] % cat small.c int printf(const char *, ...); int a = -1, b = 1, *c = &a; int main() { *c |= 1; if (a) { L: if (a < -1) printf("%d", 0); if (!b) { printf("%d", 1); goto L; } if (a > 0) goto L; b = 0; } return 0; }
