https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102557
Bug ID: 102557
Summary: [12 Regression] ICE: Segmentation fault signal
terminated program cc1plus (indefinite recursion in
modref_ref_node<int>::insert_access)
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 51533
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51533&action=edit
Testcase
g++-12.0.0-alpha20210926 snapshot (g:fe2771b291c2c7c0ac37b75ec5b160937524b60c)
ICEs when compiling the attached testcase, reduced from
libstdc++-v3/testsuite/22_locale/time_get/get_monthname/char/6.cc, w/ -O3
--param max-inline-insns-single=2 --param modref-max-accesses=2:
% g++-12.0.0 -O3 --param max-inline-insns-single=2 --param
modref-max-accesses=2 -c xv7snbwu.cc
g++-12.0.0: internal compiler error: Segmentation fault signal terminated
program cc1plus
(gdb) where
#0 0x0000000000f345c7 in modref_access_node::merge
(this=this@entry=0x7ffff77533f8, a=...,
record_adjustments=record_adjustments@entry=false)
at
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210926/work/gcc-12-20210926/gcc/ipa-modref-tree.h:204
#1 0x0000000000f35235 in modref_access_node::forced_merge
(this=0x7ffff77533f8, a=..., record_adjustments=<optimized out>)
at
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210926/work/gcc-12-20210926/gcc/ipa-modref-tree.h:351
#2 0x0000000000f39654 in modref_ref_node<int>::insert_access
(this=this@entry=0x7ffff7732f00, a=...,
max_accesses=max_accesses@entry=2,
record_adjustments=record_adjustments@entry=false)
at
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210926/work/gcc-12-20210926/gcc/ipa-modref-tree.h:575
#3 0x0000000000f397de in modref_ref_node<int>::insert_access
(this=this@entry=0x7ffff7732f00, a=...,
max_accesses=max_accesses@entry=2,
record_adjustments=record_adjustments@entry=false)
at
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210926/work/gcc-12-20210926/gcc/ipa-modref-tree.h:596
