https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89283
Bug ID: 89283
Summary: [8/9 Regression] ICE: Segmentation fault (in
stmt_could_throw_1_p)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: EH, ice-on-invalid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-9.0.0-alpha20190210 snapshot (r268755) ICEs when compiling the following
testcase containing a call of function w/ returns_twice attribute:
__attribute__ ((returns_twice)) int
zn (void);
int
sz (int i0)
{
return zn ();
return zn () < i0 + 2;
}
% gcc-9.0.0-alpha20190210 -fexceptions -fnon-call-exceptions -c vhkmslon.c
during GIMPLE pass: cfg
vhkmslon.c: In function 'sz':
vhkmslon.c:5:1: internal compiler error: Segmentation fault
5 | sz (int i0)
| ^~
0xd6f9bf crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/toplev.c:326
0xdd1f38 stmt_could_throw_1_p
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2819
0xdd1f38 stmt_could_throw_p(function*, gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2884
0xdd21b4 stmt_could_throw_p(function*, gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2856
0xdd21b4 stmt_can_throw_internal(function*, gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2948
0xdb539f gimple_verify_flow_info
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:5541
0x91778c verify_flow_info()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/cfghooks.c:263
0xdc1774 checking_verify_flow_info
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/cfghooks.h:198
0xdc1774 cleanup_tree_cfg_noloop
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfgcleanup.c:938
0xdc1774 cleanup_tree_cfg()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfgcleanup.c:989
0xdbcede execute_build_cfg
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:415
0xdbcede execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:444
I'm not sure whether it is a duplicate of PR89280.
