[Bug c/62090] New: ice in compute_may_aliases

[Bug c/62090] New: ice in compute_may_aliases

[dcb314 at hotmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 3209 bytes --]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

            Bug ID: 62090
           Summary: ice in compute_may_aliases
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com

For the attached code, compiled by gcc trunk dated 20140810,
the following crash message is produced

$ ../results/bin/gcc -std=gnu99 -O2 -c bug158.c
connection.c: In function ‘log_bad_request.isra.5’:
connection.c:679:1: internal compiler error: in compute_may_aliases, at
tree-ssa-structalias.c:7003
0xb02406 compute_may_aliases()
    ../../src/trunk/gcc/tree-ssa-structalias.c:7003
0x8bddb4 execute_function_todo
    ../../src/trunk/gcc/passes.c:1721
0x8be6cb do_per_function
    ../../src/trunk/gcc/passes.c:1476
0x8be6cb execute_todo
    ../../src/trunk/gcc/passes.c:1806
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.
$

Compiler flags -std=gnu99 -O2 required.
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Subject: [Bug c/62090] ice in compute_may_aliases
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idb090

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Created attachment 33290
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id3290&actioníit
C source code

[Bug c/62090] ice in compute_may_aliases

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-08-11
                 CC|                            |trippels at gcc dot gnu.org
            Version|4.9.2                       |4.10.0
   Target Milestone|---                         |4.10.0
     Ever confirmed|0                           |1

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
markus@x4 tmp % cat bug158.c
long a;
int *b;
extern __inline __attribute__ ((__always_inline__))
__attribute__ ((__gnu_inline__)) int sprintf (int *p1, char *p2, ...)
{
  a = __builtin_object_size (0, 0);
  return __builtin___sprintf_chk (0, 0, a, p2, __builtin_va_arg_pack ());
}

void
log_bad_request ()
{
  b += sprintf (0, "foo");
}

markus@x4 tmp % gcc -O2 -c bug158.c
bug158.c: In function ‘log_bad_request’:
bug158.c:11:1: internal compiler error: in execute_todo, at passes.c:1795
 log_bad_request ()
 ^
0x92b62c execute_todo
        ../../gcc/gcc/passes.c:1795
Please submit a full bug report,
with preprocessed source if appropriate.
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>From gcc-bugs-return-458181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 11 17:41:12 2014
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idX042

Domani Hannes <ssbssa at yahoo dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ssbssa at yahoo dot de

--- Comment #1 from Domani Hannes <ssbssa at yahoo dot de> ---
I can reproduce this with 4.8.3, but not with 4.9.0 or 4.9.1.

[Bug c/62090] ice in compute_may_aliases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Two different bugs I guess, both mine.

[Bug middle-end/62090] [5 Regression] ice in compute_may_aliases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
          Component|c                           |middle-end
         Resolution|---                         |FIXED
            Summary|ice in compute_may_aliases  |[5 Regression] ice in
                   |                            |compute_may_aliases

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.

[Bug middle-end/62090] [5 Regression] ice in compute_may_aliases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Aug 14 09:02:18 2014
New Revision: 213951

URL: https://gcc.gnu.org/viewcvs?rev=213951&root=gcc&view=rev
Log:
2014-08-14  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/62090
    * builtins.c (fold_builtin_sprintf): Move to gimple-fold.c.
    (fold_builtin_2): Do not fold sprintf.
    (fold_builtin_3): Likewise.
    * gimple-fold.c (gimple_fold_builtin_sprintf): New function
    moved from builtins.c.
    (gimple_fold_builtin): Fold sprintf.

    * gcc.dg/pr62090.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr62090.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog

[Bug middle-end/62090] [5 Regression] ice in compute_may_aliases

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

--- Comment #6 from David Binderman <dcb314 at hotmail dot com> ---
Created attachment 33345
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33345&action=edit
C source code

For the attached code, compiled by gcc trunk dated 20140817,
the following crash message is produced

$ ../results/bin/gcc -c -O2 bug160.c
adb.c: In function ‘send_connect’:
adb.c:316:13: internal compiler error: in compute_may_aliases, at
tree-ssa-structalias.c:6986
0xb1ada6 compute_may_aliases()
    ../../src/trunk/gcc/tree-ssa-structalias.c:6986
0x8d6514 execute_function_todo
    ../../src/trunk/gcc/passes.c:1721
0x8d6e2b do_per_function
    ../../src/trunk/gcc/passes.c:1476
0x8d6e2b execute_todo
    ../../src/trunk/gcc/passes.c:1806
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.

Compiler flag -O2 required.
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Subject: [Bug middle-end/62090] [5 Regression] ice in compute_may_aliases
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idb090

David Binderman <dcb314 at hotmail dot com> changed:

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

--- Comment #7 from David Binderman <dcb314 at hotmail dot com> ---
New attachment might be a related bug, or something new.

[Bug middle-end/62090] [5 Regression] ice in compute_may_aliases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, same for sprintf.  Testing a patch.

[Bug middle-end/62090] [5 Regression] ice in compute_may_aliases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Aug 18 14:51:04 2014
New Revision: 214105

URL: https://gcc.gnu.org/viewcvs?rev=214105&root=gcc&view=rev
Log:
2014-08-18  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/62090
    * builtins.c (fold_builtin_snprintf): Move to gimple-fold.c.
    (fold_builtin_3): Do not fold snprintf.
    (fold_builtin_4): Likewise.
    * gimple-fold.c (gimple_fold_builtin_snprintf): New function
    moved from builtins.c.
    (gimple_fold_builtin_with_strlen): Fold snprintf and sprintf.
    (gimple_fold_builtin): Do not fold sprintf here.

    * gcc.dg/pr62090-2.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr62090-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog

[Bug middle-end/62090] [5 Regression] ice in compute_may_aliases

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62090

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

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

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed again.