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From: "jiajing_zheng at 163 dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/113709] New: User -fno-thread-jumps gave Floating point exception at -O2, -O3, -Os Date: Thu, 01 Feb 2024 18:30:24 +0000 [thread overview] Message-ID: <bug-113709-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113709 Bug ID: 113709 Summary: User -fno-thread-jumps gave Floating point exception at -O2, -O3, -Os Product: gcc Version: 12.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: jiajing_zheng at 163 dot com Target Milestone: --- With -fno-thread-jumps option, GCC-12.2.0 at -O2, O3, -Os optimization levels generated the 'Floating point exception (core dumped)' message. jing@jing-ubuntu:~$ cat source.c static unsigned int A = 20; static unsigned int B = 1; int main(void) { int i; for (i = 0; i < 2; i++) { A *= (B / (A ? A : 3)) / (A ? A : 5); } return 0; } jing@jing-ubuntu:~$ gcc source.c -O0 -fno-thread-jumps && ./a.out jing@jing-ubuntu:~$ gcc source.c -O1 -fno-thread-jumps && ./a.out jing@jing-ubuntu:~$ gcc source.c -O2 -fno-thread-jumps && ./a.out Floating point exception (core dumped) jing@jing-ubuntu:~$ gcc source.c -O3 -fno-thread-jumps && ./a.out Floating point exception (core dumped) jing@jing-ubuntu:~$ gcc source.c -Os -fno-thread-jumps && ./a.out Floating point exception (core dumped) jing@jing-ubuntu:~$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/home/jing/gcc-12.2.0/usr/local/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.2.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.2.0 (GCC)
next reply other threads:[~2024-02-01 18:30 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-01 18:30 jiajing_zheng at 163 dot com [this message] 2024-02-01 22:10 ` [Bug middle-end/113709] [12 Regression] " pinskia at gcc dot gnu.org 2024-02-01 22:16 ` pinskia at gcc dot gnu.org
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