https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65607
Bug ID: 65607
Summary: [5 Regression] LTO: ICE (segfault) with
-fno-use-linker-plugin in
symtab_node::semantically_equivalent_p
Product: gcc
Version: 5.0
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
Created attachment 35165
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35165&action=edit
input.ii - compile with g++ -std=c++11 -flto -fno-use-linker-plugin -O3
That's with GCC 5 (r221725) on a x86-64 CentOS 6.6 with
binutils-2.20.51.0.2-5.42.el6.x86_64.
$ g++ -std=c++11 -flto -fno-use-linker-plugin -O3 input.ii
compilation fails with:
0xce160f crash_signal
../../gcc/toplev.c:383
0x928b40 symtab_node::semantically_equivalent_p(symtab_node*)
../../gcc/symtab.c:1631
0x932c86 cgraph_edge::resolve_speculation(tree_node*)
../../gcc/cgraph.c:1169
0xb326a3 redirect_to_unreachable
../../gcc/ipa-inline-analysis.c:771
0xb326a3 edge_set_predicate
../../gcc/ipa-inline-analysis.c:797
0xb37ffd inline_summary_t::duplicate(cgraph_node*, cgraph_node*,
inline_summary*, inline_summary*)
../../gcc/ipa-inline-analysis.c:1249
0x92e2cb symbol_table::call_cgraph_duplication_hooks(cgraph_node*,
cgraph_node*)
../../gcc/cgraph.c:500
0x94141d cgraph_node::create_virtual_clone(vec<cgraph_edge*, va_heap, vl_ptr>,
vec<ipa_replace_map*, va_gc, vl_embed>*, bitmap_head*, char const*)
../../gcc/cgraphclones.c:649
0x12ca927 create_specialized_node
../../gcc/ipa-cp.c:3275
0x12cbeb6 decide_about_value<tree_node*>
../../gcc/ipa-cp.c:4096
0x12cecd8 decide_whether_version_node
../../gcc/ipa-cp.c:4141
0x12cecd8 ipcp_decision_stage
../../gcc/ipa-cp.c:4302
0x12cecd8 ipcp_driver
../../gcc/ipa-cp.c:4417
0x12cecd8 execute
../../gcc/ipa-cp.c:4510
