https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100278
Bug ID: 100278
Summary: IBM Z: Segmentation fault when building valgrind with
-march=z14
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: iii at linux dot ibm.com
Target Milestone: ---
Minimized test:
$ cat test.c
a() {
register b asm("");
if (b)
b = 1;
for (; b;)
;
}
$ $HOME/gcc/build/dist/bin/gcc -m64 -O2 -g -finline-functions
-fno-stack-protector -fno-builtin -fomit-frame-pointer -fstrict-aliasing
-march=z14 -c test.c
test.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
1 | a() {
| ^
test.c: In function ‘a’:
test.c:2:12: warning: type defaults to ‘int’ in declaration of ‘b’
[-Wimplicit-int]
2 | register b asm("");
| ^
during GIMPLE pass: pre
test.c:1:1: internal compiler error: Segmentation fault
1 | a() {
| ^
0x1a33499 crash_signal
../../gcc/toplev.c:327
0x11e9bf2 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
../../gcc/tree.h:3466
0x1c57673 compute_avail
../../gcc/tree-ssa-pre.c:4163
0x1c580d9 execute
../../gcc/tree-ssa-pre.c:4370
Bisect points to:
commit 577d05fc914338cd7ddc254f3bee4532331f5c13
Author: Richard Biener <rguent...@suse.de>
Date: Tue Mar 9 09:29:29 2021 +0100
tree-optimization/99473 - more cselim
