[Bug c/65875] New: internal compiler error with gcc 5.1

["megahallon at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65875

            Bug ID: 65875
           Summary: internal compiler error with gcc 5.1
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: megahallon at gmail dot com

Created attachment 35394
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35394&action=edit
Preprocessed C file causing gcc crash

The enclosed file crashes gcc when compiled with -O2 as seen below. -O1 works.
It works with gcc 4.9.0.

$ gcc -v -O2 -c ~/gcc5.1bug.c

Using built-in specs.
COLLECT_GCC=gcc
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --prefix=/usr/local --enable-languages=c,c++
--disable-multilib
Thread model: posix
gcc version 5.1.0 (GCC) 
COLLECT_GCC_OPTIONS='-v' '-O2' '-c' '-mtune=generic' '-march=x86-64'
 /usr/local/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/cc1 -quiet -v
/home/hallon/gcc5.1bug.c -quiet -dumpbase gcc5.1bug.c -mtune=generic
-march=x86-64 -auxbase gcc5.1bug -O2 -version -o /tmp/cccJihQs.s
GNU C11 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
    compiled by GNU C version 5.1.0, GMP version 6.0.0, MPFR version 3.1.2, MPC
version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/usr/local/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include
 /usr/local/include
 /usr/local/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include-fixed
 /usr/include
End of search list.
GNU C11 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
    compiled by GNU C version 5.1.0, GMP version 6.0.0, MPFR version 3.1.2, MPC
version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 2f2bc89784971300bbbb2cc329f649d8
src/sets/bitset.c: In function ‘mutbitset_iop_PyLongObject’:
src/sets/bitset.c:2021:20: warning: passing argument 1 of ‘_PyLong_Frexp’ from
incompatible pointer type [-Wincompatible-pointer-types]
In file included from
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/Python.h:88:0,
                 from src/sets/bitset.c:3:
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/longobject.h:43:8:
note: expected ‘PyLongObject * {aka struct _longobject *}’ but argument is of
type ‘PyObject * {aka struct _object *}’
src/sets/bitset.c:2021:23: warning: passing argument 2 of ‘_PyLong_Frexp’ from
incompatible pointer type [-Wincompatible-pointer-types]
In file included from
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/Python.h:88:0,
                 from src/sets/bitset.c:3:
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/longobject.h:43:8:
note: expected ‘Py_ssize_t * {aka long int *}’ but argument is of type ‘int *’
src/sets/bitset.c:2034:20: warning: passing argument 1 of ‘_PyLong_Frexp’ from
incompatible pointer type [-Wincompatible-pointer-types]
In file included from
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/Python.h:88:0,
                 from src/sets/bitset.c:3:
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/longobject.h:43:8:
note: expected ‘PyLongObject * {aka struct _longobject *}’ but argument is of
type ‘PyObject * {aka struct _object *}’
src/sets/bitset.c:2034:23: warning: passing argument 2 of ‘_PyLong_Frexp’ from
incompatible pointer type [-Wincompatible-pointer-types]
In file included from
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/Python.h:88:0,
                 from src/sets/bitset.c:3:
/srv/sdb1/jenkins/workspaces/develop-5.x/tmp/deploy/include/python2.7/longobject.h:43:8:
note: expected ‘Py_ssize_t * {aka long int *}’ but argument is of type ‘int *’
src/sets/bitset.c: In function ‘sf_slice’:
src/sets/bitset.c:2985:1: internal compiler error: Segmentation fault
0x9bab0f crash_signal
    ../.././gcc/toplev.c:383
0xb73110 compare_values_warnv
    ../.././gcc/tree-vrp.c:1337
0xb7371c compare_values
    ../.././gcc/tree-vrp.c:1533
0xb833bc vrp_visit_phi_node
    ../.././gcc/tree-vrp.c:8879
0xad932d simulate_stmt
    ../.././gcc/tree-ssa-propagate.c:344
0xad9467 process_ssa_edge_worklist
    ../.././gcc/tree-ssa-propagate.c:422
0xada1fd ssa_propagate(ssa_prop_result (*)(gimple_statement_base*, edge_def**,
tree_node**), ssa_prop_result (*)(gphi*))
    ../.././gcc/tree-ssa-propagate.c:896
0xb7b394 execute_vrp
    ../.././gcc/tree-vrp.c:10367
0xb7b394 execute
    ../.././gcc/tree-vrp.c:10447
>From gcc-bugs-return-484559-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Apr 24 12:28:12 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65875] internal compiler error with gcc 5.1
Date: Fri, 24 Apr 2015 12:28:00 -0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide875

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-04-24
                 CC|                            |mpolacek at gcc dot gnu.org
          Component|c                           |tree-optimization
   Target Milestone|---                         |5.2
     Ever confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.  Started with r220164.