https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61283
Bug ID: 61283
Summary: [4.10 regression] SEGV in pass_ipa_comdats::execute
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: hubicka at gcc dot gnu.org
Host: i386-pc-solaris2.11
Target: i386-pc-solaris2.11
Build: i386-pc-solaris2.11
As of r210682, there are a couple of testsuite regressions on Solaris 11/x86
with
gas and ld, both 32 and 64-bit:
FAIL: g++.dg/torture/pr46367.C -O1 (internal compiler error)
FAIL: g++.dg/torture/pr46367.C -O1 (test for excess errors)
FAIL: g++.dg/torture/pr46367.C -Os (internal compiler error)
FAIL: g++.dg/torture/pr46367.C -Os (test for excess errors)
$ cc1plus -fpreprocessed pr46367.ii -quiet -O1 -o pr46367.s
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/torture/pr46367.C:11:4:
internal compiler error: Segmentation Fault
S s;
^
0x88b844c crash_signal
/vol/gcc/src/hg/trunk/local/gcc/toplev.c:337
0x8de329a ipa_comdats
/vol/gcc/src/hg/trunk/local/gcc/ipa-comdats.c:320
0x8de329a execute
/vol/gcc/src/hg/trunk/local/gcc/ipa-comdats.c:371
Under gdb, I find
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
ipa_comdats () at /vol/gcc/src/hg/trunk/local/gcc/ipa-comdats.c:320
320 tree group = *map.contains (symbol);
(gdb) where
#0 ipa_comdats () at /vol/gcc/src/hg/trunk/local/gcc/ipa-comdats.c:320
#1 (anonymous namespace)::pass_ipa_comdats::execute (this=0x95a8500)
at /vol/gcc/src/hg/trunk/local/gcc/ipa-comdats.c:371
#2 0x088007d8 in execute_one_pass (pass=0x95a8500)
at /vol/gcc/src/hg/trunk/local/gcc/passes.c:2180
#3 0x08801251 in execute_ipa_pass_list (pass=0x95a8500)
at /vol/gcc/src/hg/trunk/local/gcc/passes.c:2571
#4 0x0857a19f in ipa_passes ()
at /vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:2093
#5 compile () at /vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:2183
#6 0x0857ab9b in finalize_compilation_unit ()
at /vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:2338
#7 0x08370eeb in cp_write_global_declarations ()
at /vol/gcc/src/hg/trunk/local/gcc/cp/decl2.c:4625
#8 0x088b8505 in compile_file ()
at /vol/gcc/src/hg/trunk/local/gcc/toplev.c:562
#9 0x088ba56b in do_compile ()
at /vol/gcc/src/hg/trunk/local/gcc/toplev.c:1915
#10 toplev_main (argc=7, argv=0xfeffe4cc)
at /vol/gcc/src/hg/trunk/local/gcc/toplev.c:1991
#11 0x090750ab in main (argc=7, argv=0xfeffe4cc)
at /vol/gcc/src/hg/trunk/local/gcc/main.c:36
Rainer
