https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70187
Bug ID: 70187
Summary: [6 Regression] ICE (segfault) in lto1 with
-Wsuggest-final-methods/-Wsuggest-final-types
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: hubicka at gcc dot gnu.org
Target Milestone: ---
Created attachment 37937
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37937&action=edit
testcase (test.ii)
g++ -c -w -r -nostdlib -O2 -flto input26b.ii
g++ -Ofast -flto -Wsuggest-final-methods -Wsuggest-final-types input26b.o
ICEs with:
lto1: internal compiler error: Segmentation fault
0xa77adf crash_signal
../../gcc/toplev.c:335
0x886444 vec<cgraph_node*, va_heap, vl_embed>::operator[](unsigned int)
../../gcc/vec.h:714
0x886444 vec<cgraph_node*, va_heap, vl_ptr>::operator[](unsigned int)
../../gcc/vec.h:1180
0x886444 possible_polymorphic_call_targets(tree_node*, long,
ipa_polymorphic_call_context, bool*, void**, bool)
../../gcc/ipa-devirt.c:3181
0x888a7a possible_polymorphic_call_targets(cgraph_edge*, bool*, void**, bool)
../../gcc/ipa-utils.h:114
0x888a7a ipa_devirt
../../gcc/ipa-devirt.c:3576
Worked a few days ago with the trunk in the preliminary patch PR69630 comment 3
applied. (As that PR is fixed, my current trunk build has no extra patches
applied.)
