https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100547
Bug ID: 100547
Summary: ICE with "-g -O1": Segmentation fault signal
terminated program cc1, during RTL pass: expand
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: cnsun at uwaterloo dot ca
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.FUbEknNORK-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210511 (experimental) [master revision
:7db32cac8:aa891c56f25baac94db004e309d1b6e40b770a95] (GCC)
$ cat mutant.c
typedef __attribute__((vector_size(
((((((((((((((((((((((((((((((8 * sizeof(short)) * sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)) *
sizeof(short)))) V;
k() { V w = {}; }
$ gcc-trunk -O1 -g mutant.c
mutant.c:31:22: warning: type defaults to ‘int’ in declaration of ‘V’
[-Wimplicit-int]
31 | sizeof(short)))) V;
| ^
mutant.c:32:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
32 | k() { V w = {}; }
| ^
during RTL pass: expand
gcc-trunk: 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.
