public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "zhendong.su at inf dot ethz.ch" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/99943] New: wrong code at -Os Date: Tue, 06 Apr 2021 18:51:26 +0000 [thread overview] Message-ID: <bug-99943-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99943 Bug ID: 99943 Summary: wrong code at -Os 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: --- [538] % 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 20210406 (experimental) [master revision 62321ab477e:8aa4f7b4faf:d48f87d5c1927b1bf2009af3251fe8757e823713] (GCC) [539] % [539] % gcctk -O1 small.c; ./a.out [540] % [540] % gcctk -Os small.c [541] % ./a.out Aborted [542] % [542] % cat small.c char a; int b, c[8]; int main() { for (; a < 8; a++) { for (b = 0; b < 8; b++) c[a] = 1; c[a] = 0; } if (c[0] != 0) __builtin_abort (); return 0; }
next reply other threads:[~2021-04-06 18:51 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-06 18:51 zhendong.su at inf dot ethz.ch [this message] 2021-04-06 19:24 ` [Bug tree-optimization/99943] [11 Regression] " jakub at gcc dot gnu.org 2021-04-07 7:19 ` rguenth at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-99943-4@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).