[Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression

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* [Bug middle-end/31337]  New: [4.2/4.3 regression] ICE with statement expression
@ 2007-03-24 22:59 reichelt at gcc dot gnu dot org
  2007-03-24 23:00 ` [Bug middle-end/31337] " reichelt at gcc dot gnu dot org
                   ` (9 more replies)
  0 siblings, 10 replies; 11+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2007-03-24 22:59 UTC (permalink / raw)
  To: gcc-bugs

The following valid code snippet triggers an ICE on mainline and 4.2 branch:

===========================
struct A
{
  int i[0];
  A();
  A(const A&);
};

void foo()
{
  A a = ({ A(); });
}
===========================

bug.cc: In function 'void foo()':
bug.cc:10: internal compiler error: in create_tmp_var, at gimplify.c:488
Please submit a full bug report, [etc.]


-- 
           Summary: [4.2/4.3 regression] ICE with statement expression
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, monitored
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug middle-end/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
@ 2007-03-24 23:00 ` reichelt at gcc dot gnu dot org
  2007-03-25  6:47 ` [Bug c++/31337] " pinskia at gcc dot gnu dot org
                   ` (8 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2007-03-24 23:00 UTC (permalink / raw)
  To: gcc-bugs



-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
  2007-03-24 23:00 ` [Bug middle-end/31337] " reichelt at gcc dot gnu dot org
@ 2007-03-25  6:47 ` pinskia at gcc dot gnu dot org
  2007-04-15 22:07 ` mmitchel at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-03-25  6:47 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from pinskia at gcc dot gnu dot org  2007-03-25 08:46 -------
This is a front-end issue:
  <<cleanup_point <<< Unknown tree: expr_stmt
  (void) (a = TARGET_EXPR <D.2077, <<cleanup_point TARGET_EXPR <D.2076, <<<
Unknown tree: aggr_init_expr
  4
  __comp_ctor
  D.2076
  0B >>>
>>>>) >>>


We have a cleanup_point expression which causes an extra variable to be created
but since the type is addressable, we abort.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|middle-end                  |c++
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-03-25 07:46:59
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
  2007-03-24 23:00 ` [Bug middle-end/31337] " reichelt at gcc dot gnu dot org
  2007-03-25  6:47 ` [Bug c++/31337] " pinskia at gcc dot gnu dot org
@ 2007-04-15 22:07 ` mmitchel at gcc dot gnu dot org
  2007-04-23 16:19 ` janis at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2007-04-15 22:07 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from mmitchel at gcc dot gnu dot org  2007-04-15 23:06 -------
P2, rather than P1, because of the use of statement-expressions.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (2 preceding siblings ...)
  2007-04-15 22:07 ` mmitchel at gcc dot gnu dot org
@ 2007-04-23 16:19 ` janis at gcc dot gnu dot org
  2007-04-23 19:19 ` jason at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: janis at gcc dot gnu dot org @ 2007-04-23 16:19 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from janis at gcc dot gnu dot org  2007-04-23 17:19 -------
A regression hunt on powerpc-linux identified the following patch:

    http://gcc.gnu.org/viewcvs?view=rev&rev=116311

    r116311 | jason | 2006-08-21 13:54:57 -0700 (Mon, 21 Aug 2006)


-- 

janis at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (3 preceding siblings ...)
  2007-04-23 16:19 ` janis at gcc dot gnu dot org
@ 2007-04-23 19:19 ` jason at gcc dot gnu dot org
  2007-05-14 21:32 ` mmitchel at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: jason at gcc dot gnu dot org @ 2007-04-23 19:19 UTC (permalink / raw)
  To: gcc-bugs



-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2007-03-25 07:46:59         |2007-04-23 20:19:45
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (4 preceding siblings ...)
  2007-04-23 19:19 ` jason at gcc dot gnu dot org
@ 2007-05-14 21:32 ` mmitchel at gcc dot gnu dot org
  2007-07-20  3:52 ` mmitchel at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2007-05-14 21:32 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #4 from mmitchel at gcc dot gnu dot org  2007-05-14 22:26 -------
Will not be fixed in 4.2.0; retargeting at 4.2.1.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.2.0                       |4.2.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (5 preceding siblings ...)
  2007-05-14 21:32 ` mmitchel at gcc dot gnu dot org
@ 2007-07-20  3:52 ` mmitchel at gcc dot gnu dot org
  2007-08-27 20:02 ` jason at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2007-07-20  3:52 UTC (permalink / raw)
  To: gcc-bugs



-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.2.1                       |4.2.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (6 preceding siblings ...)
  2007-07-20  3:52 ` mmitchel at gcc dot gnu dot org
@ 2007-08-27 20:02 ` jason at gcc dot gnu dot org
  2007-08-27 22:05 ` jason at gcc dot gnu dot org
  2007-08-28 14:00 ` jason at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: jason at gcc dot gnu dot org @ 2007-08-27 20:02 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #5 from jason at gcc dot gnu dot org  2007-08-27 20:02 -------
Subject: Bug 31337

Author: jason
Date: Mon Aug 27 20:02:22 2007
New Revision: 127838

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=127838
Log:
        PR c++/31337
        * gimplify.c (gimplify_modify_expr): Discard the assignment of
        zero-sized types after calling gimplify_modify_expr_rhs.
        * testsuite/g++.dg/ext/stmtexpr11.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/ext/stmtexpr11.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (7 preceding siblings ...)
  2007-08-27 20:02 ` jason at gcc dot gnu dot org
@ 2007-08-27 22:05 ` jason at gcc dot gnu dot org
  2007-08-28 14:00 ` jason at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: jason at gcc dot gnu dot org @ 2007-08-27 22:05 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #6 from jason at gcc dot gnu dot org  2007-08-27 22:04 -------
Subject: Bug 31337

Author: jason
Date: Mon Aug 27 22:04:37 2007
New Revision: 127840

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=127840
Log:
        PR c++/31337
        * gimplify.c (gimplify_modify_expr): Discard the assignment of
        zero-sized types after calling gimplify_modify_expr_rhs.

Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/gimplify.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [Bug c++/31337] [4.2/4.3 regression] ICE with statement expression
  2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
                   ` (8 preceding siblings ...)
  2007-08-27 22:05 ` jason at gcc dot gnu dot org
@ 2007-08-28 14:00 ` jason at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: jason at gcc dot gnu dot org @ 2007-08-28 14:00 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #7 from jason at gcc dot gnu dot org  2007-08-28 14:00 -------
Fixed in 4.2 and 4.3.


-- 

jason at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31337


^ permalink raw reply	[flat|nested] 11+ messages in thread

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2007-03-24 22:59 [Bug middle-end/31337] New: [4.2/4.3 regression] ICE with statement expression reichelt at gcc dot gnu dot org
2007-03-24 23:00 ` [Bug middle-end/31337] " reichelt at gcc dot gnu dot org
2007-03-25  6:47 ` [Bug c++/31337] " pinskia at gcc dot gnu dot org
2007-04-15 22:07 ` mmitchel at gcc dot gnu dot org
2007-04-23 16:19 ` janis at gcc dot gnu dot org
2007-04-23 19:19 ` jason at gcc dot gnu dot org
2007-05-14 21:32 ` mmitchel at gcc dot gnu dot org
2007-07-20  3:52 ` mmitchel at gcc dot gnu dot org
2007-08-27 20:02 ` jason at gcc dot gnu dot org
2007-08-27 22:05 ` jason at gcc dot gnu dot org
2007-08-28 14:00 ` jason at gcc dot gnu dot org

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