[Bug c/64269] ICE with -O3 enabled on Ubuntu 14.04

["trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64269

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-12-11
                 CC|                            |trippels at gcc dot gnu.org
     Ever confirmed|0                           |1
      Known to fail|                            |4.8.3, 4.9.1, 5.0

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Confirmed.

==3714== Invalid write of size 8
==3714==    at 0x402F8B7: memset (vg_replace_strmem.c:1094)
==3714==    by 0xBC185D: simplify_builtin_call(gimple_stmt_iterator*,
tree_node*) (tree-ssa-forwprop.c:1396)
==3714==  Address 0xfff001000 is not stack'd, malloc'd or (recently) free'd
==3714== 
test_case_7213.c: In function ‘main’:
test_case_7213.c:1:5: internal compiler error: Segmentation fault
>From gcc-bugs-return-470267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Dec 11 13:27:46 2014
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/64269] ICE with -O3 enabled on Ubuntu 14.04
Date: Thu, 11 Dec 2014 13:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd269

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
But the testcase is invalid:

markus@x4 tmp % frama-c -val -val-signed-overflow-alarms -precise-unions
-obviously-terminates -no-val-show-progress -machdep x86_64 test_case_7213.c
[kernel] preprocessing with "gcc -C -E -I.  test_case_7213.c"
[value] Analyzing a complete application starting at main
[value] Computing initial state
[value] Initial state computed
[value] Values of globals at initialization
test_case_7213.c:14:[kernel] warning: out of bounds write. assert
\valid(tmp_5);