https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108449
Bug ID: 108449
Summary: [13 Regression] ICE in eliminate_unnecessary_stmts, at
tree-ssa-dce.cc:1512
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started between 20220904 and 20220911, at -O1+ :
$ cat z1.c
static int vfork();
void f() { vfork(); }
$ gcc-13-20230115 -c z1.c -O2
z1.c:1:12: warning: 'vfork' used but never defined
1 | static int vfork();
| ^~~~~
during GIMPLE pass: cddce
z1.c: In function 'f':
z1.c:2:1: internal compiler error: in eliminate_unnecessary_stmts, at
tree-ssa-dce.cc:1512
2 | void f() { vfork(); }
| ^~~~
0xe0f0dc eliminate_unnecessary_stmts
../../gcc/tree-ssa-dce.cc:1512
0xe108bf perform_tree_ssa_dce
../../gcc/tree-ssa-dce.cc:1945
0xe11e55 tree_ssa_cd_dce
../../gcc/tree-ssa-dce.cc:1986
0xe11e55 execute
../../gcc/tree-ssa-dce.cc:2069
