https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93137
Bug ID: 93137
Summary: [10 regression] ICE in refs_may_alias_p_2
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: s...@li-snyder.org
Target Milestone: ---
hi -
With this version of gcc10 (svn rev 279832):
gcc version 10.0.0 20200102 (experimental) (GCC)
this source gives an ICE when compiled with -O:
-- x.cc -----------------------------------------------------
#include <string>
void foo (const std::string& s)
{
struct GCCLibSuffix {
std::string LibSuffix;
bool Active;
}
Suffixes[] =
{
{"/gcc/" + s, true}
};
}
-------------------------------------------------------------
$ g++ -std=c++17 -O -c x.cc
during IPA pass: fnsummary
x.cc: In function ‘void foo(const string&)’:
x.cc:13:1: internal compiler error: Segmentation fault
13 | }
| ^
0xc1467f crash_signal
/home/sss/gcc/gcc/gcc/toplev.c:328
0xcdb7c4 refs_may_alias_p_2
/home/sss/gcc/gcc/gcc/tree-ssa-alias.c:2190
0xcdc736 refs_may_alias_p_1(ao_ref*, ao_ref*, bool)
/home/sss/gcc/gcc/gcc/tree-ssa-alias.c:2227
0xcdc736 stmt_may_clobber_ref_p_1(gimple*, ao_ref*, bool)
/home/sss/gcc/gcc/gcc/tree-ssa-alias.c:3001
0xcdcdc0 walk_aliased_vdefs_1
/home/sss/gcc/gcc/gcc/tree-ssa-alias.c:3656
0xcdcf0f walk_aliased_vdefs(ao_ref*, tree_node*, bool (*)(ao_ref*, tree_node*,
void*), void*, bitmap_head**, bool*, unsigned int)
/home/sss/gcc/gcc/gcc/tree-ssa-alias.c:3679
0xa4cda2 parm_ref_data_pass_through_p
/home/sss/gcc/gcc/gcc/ipa-prop.c:1052
0xa58c39 ipa_compute_jump_functions_for_edge
/home/sss/gcc/gcc/gcc/ipa-prop.c:2237
0xa59cca ipa_compute_jump_functions_for_bb
/home/sss/gcc/gcc/gcc/ipa-prop.c:2297
0xa59cca analysis_dom_walker::before_dom_children(basic_block_def*)
/home/sss/gcc/gcc/gcc/ipa-prop.c:2823
0x137e977 dom_walker::walk(basic_block_def*)
/home/sss/gcc/gcc/gcc/domwalk.c:309
0xa5495d ipa_analyze_node(cgraph_node*)
/home/sss/gcc/gcc/gcc/ipa-prop.c:2893
0xa3c4df inline_indirect_intraprocedural_analysis
/home/sss/gcc/gcc/gcc/ipa-fnsummary.c:4020
0xa3c4df inline_analyze_function(cgraph_node*)
/home/sss/gcc/gcc/gcc/ipa-fnsummary.c:4040
0xa3c653 ipa_fn_summary_generate
/home/sss/gcc/gcc/gcc/ipa-fnsummary.c:4084
0xb5848b execute_ipa_summary_passes(ipa_opt_pass_d*)
/home/sss/gcc/gcc/gcc/passes.c:2189
0x86564d ipa_passes
/home/sss/gcc/gcc/gcc/cgraphunit.c:2629
0x86564d symbol_table::compile()
/home/sss/gcc/gcc/gcc/cgraphunit.c:2739
0x86712c symbol_table::compile()
/home/sss/gcc/gcc/gcc/cgraphunit.c:2719
0x86712c symbol_table::finalize_compilation_unit()
/home/sss/gcc/gcc/gcc/cgraphunit.c:2986
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$
Compiles OK with gcc 9.2.1.
The source from which this was reduced also built ok with gcc trunk
10.0.0 20191202.
