https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69737
Bug ID: 69737
Summary: [5 Regression] FAIL: gcc.c-torture/execute/pr64682.c
-O2 execution test
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: segher at kernel dot crashing.org
Target Milestone: ---
On ia32, x86-64 and x32, r233160 caused:
FAIL: gcc.c-torture/execute/pr64682.c -O2 execution test
FAIL: gcc.c-torture/execute/pr64682.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
FAIL: gcc.c-torture/execute/pr64682.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects execution test
FAIL: gcc.c-torture/execute/pr64682.c -O3 -fomit-frame-pointer execution
test
FAIL: gcc.c-torture/execute/pr64682.c -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions execution test
FAIL: gcc.c-torture/execute/pr64682.c -O3 -fomit-frame-pointer
-funroll-loops execution test
FAIL: gcc.c-torture/execute/pr64682.c -O3 -g execution test
It only happens on gcc-5-branch, not on trunk:
/export/build/gnu/gcc-5/build-x86_64-linux/gcc/
/export/gnu/import/git/sources/gcc-release/gcc/testsuite/gcc.c-torture/execute/pr64682.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -w -lm -o
./pr64682.exe
[hjl@gnu-skl-1 testsuite]$ gdb ./pr64682.exe
GNU gdb (GDB) Fedora 7.10.1-30.fc23
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Reading symbols from ./pr64682.exe...(no debugging symbols found)...done.
(gdb) r
Starting program:
/export/build/gnu/gcc-5/build-x86_64-linux/gcc/testsuite/pr64682.exe
Missing separate debuginfos, use: dnf debuginfo-install
glibc-2.22-7.0.fc23.x86_64
Program received signal SIGABRT, Aborted.
0x00007ffff774c3b8 in raise () from /lib64/libc.so.6
(gdb) bt
#0 0x00007ffff774c3b8 in raise () from /lib64/libc.so.6
#1 0x00007ffff774dfba in abort () from /lib64/libc.so.6
#2 0x00000000004005dd in foo ()
#3 0x00000000004004b6 in main ()
(gdb)
