https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106995
Bug ID: 106995
Summary: gcc-trunk crash at -O2
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: shaohua.li at inf dot ethz.ch
Target Milestone: ---
% gcc-tk -v
Using built-in specs.
COLLECT_GCC=gcc-tk
COLLECT_LTO_WRAPPER=/zdata/shaoli/compilers/ccbuilder-compilers/gcc-1e4c7e870e2a3a059568565196a8f3b8c9de1fa4/libexec/gcc/x86_64-pc-linux-gnu/13.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --disable-multilib --disable-bootstrap
--enable-languages=c,c++
--prefix=/zdata/shaoli/compilers/ccbuilder-compilers/gcc-1e4c7e870e2a3a059568565196a8f3b8c9de1fa4
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.0.0 20220915 (experimental) (GCC)
%
% gcc-tk -w -O1 a.c
during RTL pass: expand
simple.c: In function ‘i’:
simple.c:4:1: internal compiler error: in expand_LOOP_VECTORIZED, at
internal-fn.cc:2729
4 | i() {
| ^
0x2033eee internal_error(char const*, ...)
???:0
0x998592 fancy_abort(char const*, int, char const*)
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
%
% cat a.c
a, b, c, d;
static unsigned long *e = &b, *f = &b;
g(h) { return a >= 2 ? 0 : h >> a; }
i() {
for (; c;) {
if (*f ^ 11)
for (;;)
;
d = g(0 >= 0);
*e = d;
}
}
main() {}
%
Compiler explorer: https://godbolt.org/z/4a5WYn4fM
