https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63855
Bug ID: 63855
Summary: [5 Regression] ICE: SIGSEGV in ipa_comdats with
-fsanitize=null
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Created attachment 33960
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33960&action=edit
reduced testcase
$ gcc -O -fkeep-inline-functions -fsanitize=null testcase.C
==22060== Invalid read of size 8
==22060== at 0x180E214: ipa_comdats (ipa-comdats.c:340)
==22060== by 0x180E214: (anonymous
namespace)::pass_ipa_comdats::execute(function*) (ipa-comdats.c:381)
==22060== by 0xCCBE78: execute_one_pass(opt_pass*) (passes.c:2269)
==22060== by 0xCCCAD1: execute_ipa_pass_list(opt_pass*) (passes.c:2663)
==22060== by 0x9B3B69: ipa_passes (cgraphunit.c:2088)
==22060== by 0x9B3B69: symbol_table::compile() (cgraphunit.c:2172)
==22060== by 0x9B5687: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2325)
==22060== by 0x785449: cp_write_global_declarations() (decl2.c:4677)
==22060== by 0xDC3BD3: compile_file() (toplev.c:583)
==22060== by 0x694528: do_compile (toplev.c:2020)
==22060== by 0x694528: toplev::main(int, char**) (toplev.c:2117)
==22060== by 0x694B78: main (main.c:38)
==22060== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==22060==
testcase.C:5:4: internal compiler error: Segmentation fault
B b;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r217458 - ICE
4_9 r216937 - OK
