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From: "zhendong.su at inf dot ethz.ch" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/99751] New: wrong code at -O1 Date: Wed, 24 Mar 2021 12:32:22 +0000 [thread overview] Message-ID: <bug-99751-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99751 Bug ID: 99751 Summary: wrong code at -O1 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- [549] % gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/11.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --prefix=/local/suz-local/software/local/gcc-trunk --enable-languages=c,c++ --disable-werror --enable-multilib --with-system-zlib Thread model: posix Supported LTO compression algorithms: zlib gcc version 11.0.1 20210324 (experimental) [master revision be70bb5e4ba:220fd7ed5f2:bf1f3168f474734400e7a97660d1e7dec664bca9] (GCC) [550] % [550] % gcctk -O0 small.c; ./a.out [551] % [551] % gcctk -O1 small.c [552] % ./a.out Aborted [553] % [553] % cat small.c int *a, **c = &a; int *b(int *d) { return d; } void e(int *d) { *c = b(d); } int main() { int f = (e(&f), 0); if (a != &f) __builtin_abort(); return 0; }
next reply other threads:[~2021-03-24 12:32 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-24 12:32 zhendong.su at inf dot ethz.ch [this message] 2021-03-24 12:35 ` [Bug tree-optimization/99751] [11 Regression] " rguenth at gcc dot gnu.org 2021-03-24 12:37 ` rguenth at gcc dot gnu.org 2021-03-24 12:38 ` [Bug ipa/99751] " rguenth at gcc dot gnu.org 2021-03-24 12:38 ` jakub at gcc dot gnu.org 2021-03-24 12:46 ` rguenth at gcc dot gnu.org 2021-03-25 15:17 ` marxin at gcc dot gnu.org 2021-03-29 10:15 ` hubicka at gcc dot gnu.org 2021-03-29 10:59 ` hubicka at gcc dot gnu.org 2021-03-29 11:25 ` hubicka at gcc dot gnu.org 2021-03-29 18:12 ` hubicka at gcc dot gnu.org 2021-03-29 19:00 ` cvs-commit at gcc dot gnu.org
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