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[Bug tree-optimization/71881] [4.9/6/7 Regression] ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form
- From: "marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 14 Jul 2016 16:07:45 +0000
- Subject: [Bug tree-optimization/71881] [4.9/6/7 Regression] ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form
- Auto-submitted: auto-generated
- References: <bug-71881-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71881
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-07-14
CC| |marxin at gcc dot gnu.org
Summary|ICE on valid code at -O3 |[4.9/6/7 Regression] ICE on
|with -g enabled on |valid code at -O3 with -g
|x86_64-linux-gnu: cannot |enabled on
|update SSA form |x86_64-linux-gnu: cannot
| |update SSA form
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, GCC 5 branch looks fine, however 4.9 doesn't:
pr71881.c:4:5: internal compiler error: Segmentation fault
int fn1 ()
^
0x9ad80f crash_signal
/home/marxin/BIG/Programming/gcc/gcc/toplev.c:337
0xb4d7a3 verify_use
/home/marxin/BIG/Programming/gcc/gcc/tree-ssa.c:803
0xb52357 verify_ssa(bool)
/home/marxin/BIG/Programming/gcc/gcc/tree-ssa.c:1058
0x900a0c execute_function_todo
/home/marxin/BIG/Programming/gcc/gcc/passes.c:1854
0x9012c4 do_per_function
/home/marxin/BIG/Programming/gcc/gcc/passes.c:1574
0x9012c4 execute_todo
/home/marxin/BIG/Programming/gcc/gcc/passes.c:1887