[Bug c/58911] New: ice in operator[], at vec.h:827

[Bug c/58911] New: ice in operator[], at vec.h:827

[dcb314 at hotmail dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58911

            Bug ID: 58911
           Summary: ice in operator[], at vec.h:827
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com

Following on from bug # 54327, I compiled
the attached source code with gcc trunk dated 20131027
with flag -O2.

It said

htslib.c: In function ‘x_escape_http’:
htslib.c:3804:7: internal compiler error: in operator[], at vec.h:827
0xb8fa27 vec<operand_entry*, va_heap, vl_embed>::operator[](unsigned int)
    ../../src/trunk/gcc/vec.h:827
0xb91572 vec<operand_entry*, va_heap, vl_embed>::operator[](unsigned int)
    ../../src/trunk/gcc/tree.h:2792
0xb91572 vec<operand_entry*, va_heap, vl_ptr>::operator[](unsigned int)
    ../../src/trunk/gcc/vec.h:1256
0xb91572 update_ops
    ../../src/trunk/gcc/tree-ssa-reassoc.c:2619
0xb9999f maybe_optimize_range_tests
    ../../src/trunk/gcc/tree-ssa-reassoc.c:2907
0xb9999f reassociate_bb
    ../../src/trunk/gcc/tree-ssa-reassoc.c:4325
0xb98eb7 reassociate_bb
    ../../src/trunk/gcc/tree-ssa-reassoc.c:4482
0xb9b7ab do_reassoc
    ../../src/trunk/gcc/tree-ssa-reassoc.c:4515
0xb9b7ab execute_reassoc
    ../../src/trunk/gcc/tree-ssa-reassoc.c:4597
0xb9b7ab execute
    ../../src/trunk/gcc/tree-ssa-reassoc.c:4639
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/58911] ice in operator[], at vec.h:827
Date: Tue, 29 Oct 2013 12:33:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX911

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Created attachment 31102
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id1102&actioníit
gzipped C source code

[Bug tree-optimization/58911] [4.9 Regression] ice in operator[], at vec.h:827

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58911

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-10-29
          Component|c                           |tree-optimization
   Target Milestone|---                         |4.9.0
            Summary|ice in operator[], at       |[4.9 Regression] ice in
                   |vec.h:827                   |operator[], at vec.h:827
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed reducing.

[Bug tree-optimization/58911] [4.9 Regression] ice in operator[], at vec.h:827

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58911

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 31106
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31106&action=edit
autoreduced testcase

[Bug tree-optimization/58911] [4.9 Regression] ice in operator[], at vec.h:827

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58911

David Binderman <dcb314 at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from David Binderman <dcb314 at hotmail dot com> ---
Crash seems to have gone away in the version of 20131030.