[Bug c++/23171] New: [4.1 Regression] ICE on pointer initialization

[Bug c++/23171] New: [4.1 Regression] ICE on pointer initialization

[reichelt at gcc dot gnu dot org]

The following code snippet causes an ICE on mainline when compiled
with "g++ -O" (the C frontend is not affected):

=============================
int *p = (int*)(int[1]){0};
=============================

bug.cc:1: internal compiler error: tree check: expected class 'expression', have
'exceptional' (constructor) in get_base_var, at ipa-utils.c:224
Please submit a full bug report, [etc.]

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           Summary: [4.1 Regression] ICE on pointer initialization
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, monitored
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-01 11:58 -------
This is the same problem as PR 22533 really.

So it is not only the Ada front-end that produces &CONSTRUCTOR.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |22533
              nThis|                            |
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-08-01 11:58:34
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2005-08-22 05:15 -------
How does the C front end represent this expression?

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-22 11:46 -------
(In reply to comment #2)
> How does the C front end represent this expression?

Using a COMPOUND_LITERAL_EXPR which should solve this and PR 23172.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-04 17:27 -------
(In reply to comment #3)
> (In reply to comment #2)
> > How does the C front end represent this expression?
> 
> Using a COMPOUND_LITERAL_EXPR which should solve this and PR 23172.

And PR 20103.



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[janis at gcc dot gnu dot org]

------- Additional Comments From janis at gcc dot gnu dot org  2005-09-09 16:57 -------
The testcase starts failing with this patch from zadeck and dberlin:

  http://gcc.gnu.org/ml/gcc-cvs/2005-07/msg00635.html

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[dberlin at gcc dot gnu dot org]

------- Additional Comments From dberlin at gcc dot gnu dot org  2005-09-09 17:00 -------
It's a latent FE  bug, hopefully one that an FE person can solve.
It's out of my FE experience league, unfortunately.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171

[Bug c++/23171] [4.1 Regression] ICE on pointer initialization

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-09 17:00 -------
(In reply to comment #5)
> The testcase starts failing with this patch from zadeck and dberlin:
It was decided this was really a latent front-end bug. 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23171