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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 c/103314] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: Segmentation fault Date: Thu, 18 Nov 2021 12:39:28 +0000 [thread overview] Message-ID: <bug-103314-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103314 Bug ID: 103314 Summary: ICE on valid code at -O1 and above on x86_64-linux-gnu: Segmentation fault Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- It seems to be a recent regression. [585] % 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/12.0.0/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 12.0.0 20211118 (experimental) [master r12-5359-g280d2838c11] (GCC) [586] % [586] % gcctk -O0 small.c; ./a.out [587] % [587] % gcc110 -O1 small.c; ./a.out small.c: In function ‘main’: small.c:3:37: warning: right shift count is negative [-Wshift-count-negative] 3 | unsigned c = 0, d = c ? 1 ^ c ^ 1 >> a : 0; | ~~^~~~ [588] % [588] % gcctk -O1 small.c small.c: In function ‘main’: small.c:3:37: warning: right shift count is negative [-Wshift-count-negative] 3 | unsigned c = 0, d = c ? 1 ^ c ^ 1 >> a : 0; | ~~^~~~ gcctk: internal compiler error: Segmentation fault signal terminated program cc1 Please submit a full bug report, with preprocessed source if appropriate. See <https://gcc.gnu.org/bugs/> for instructions. [589] % [589] % cat small.c const int a = -1; int main() { unsigned c = 0, d = c ? 1 ^ c ^ 1 >> a : 0; return 0; }
next reply other threads:[~2021-11-18 12:39 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-18 12:39 zhendong.su at inf dot ethz.ch [this message] 2021-11-18 12:40 ` [Bug c/103314] " zhendong.su at inf dot ethz.ch 2021-11-18 12:46 ` [Bug middle-end/103314] [12 regression] " pinskia at gcc dot gnu.org 2021-11-18 12:47 ` [Bug middle-end/103314] [12 regression] ICE on valid code at -O1 and above on x86_64-linux-gnu: Segmentation fault since r12-5358 jakub at gcc dot gnu.org 2021-11-18 12:52 ` jakub at gcc dot gnu.org 2021-11-19 1:19 ` pinskia at gcc dot gnu.org 2021-11-19 1:36 ` pinskia at gcc dot gnu.org 2021-11-19 6:33 ` pinskia at gcc dot gnu.org 2021-11-19 12:07 ` cvs-commit at gcc dot gnu.org 2021-11-19 12:08 ` pinskia at gcc dot gnu.org 2021-11-30 11:54 ` pinskia at gcc dot gnu.org
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