[Bug c++/27722] New: [4.0/4.1/4.2 regression] ICE incrementing an array

[Bug c++/27722] New: [4.0/4.1/4.2 regression] ICE incrementing an array

[reichelt at gcc dot gnu dot org]

The C++ frontend crashes since GCC 4.0.3 on the following invalid code
snippet:

=================================
void foo()
{
    const int x[] = 0;
    ++x;
}
=================================

bug.cc: In function 'void foo()':
bug.cc:3: error: initializer fails to determine size of 'x'
bug.cc:3: error: cannot convert 'int' to 'const int [1]' in initialization
bug.cc:4: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in get_unwidened, at tree.c:5322
Please submit a full bug report, [etc.]


-- 
           Summary: [4.0/4.1/4.2 regression] ICE incrementing an array
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        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=27722

[Bug c++/27722] [4.0/4.1/4.2 regression] ICE incrementing an array

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |minor
   Target Milestone|---                         |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0/4.1/4.2 regression] ICE incrementing an array

[bangerth at dealii dot org]

------- Comment #1 from bangerth at dealii dot org  2006-05-26 14:56 -------
This didn't fail with 4.0.2pre, so it must be a regression on a release branch.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0/4.1/4.2 regression] ICE incrementing an array

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0/4.1/4.2 regression] ICE incrementing an array

[mmitchel at gcc dot gnu dot org]

------- Comment #2 from mmitchel at gcc dot gnu dot org  2006-06-05 02:46 -------
Subject: Bug 27722

Author: mmitchel
Date: Mon Jun  5 02:46:38 2006
New Revision: 114382

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=114382
Log:
        PR c++/27819
        * decl.c (cp_finish_decl): Process initializers for static data
        members with non-dependent initializers, even in templates.
        PR c++/27722
        * decl.c (maybe_deduce_size_from_array_init): If the declaration
        is erroneous, give it an erroneous type.
        (layout_var_decl): If the type is erroneous, give up.
        (check_initializer): Likewise.
        PR c++/27807
        * cp-tree.h (TYPE_OBJ_P): New macro.
        (TYPE_PTROB_P): Use it.
        (TYPE_REF_OBJ_P): Likewise.
        * semantics.c (finish_compound_literal): Do not permit compound
        literals of non-object types.
        PR c++/27806
        * typeck.c (original_type): Robustify.
        PR c++/27819
        * g++.dg/template/static25.C: New test.
        PR c++/27722
        * g++.dg/init/array21.C: New test.
        PR c++/27807
        * g++.dg/ext/complit7.C: New test.

        PR c++/27806
        * g++.dg/parse/ptrmem5.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/ext/complit7.C
    trunk/gcc/testsuite/g++.dg/init/array21.C
    trunk/gcc/testsuite/g++.dg/parse/ptrmem5.C
    trunk/gcc/testsuite/g++.dg/template/static25.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/semantics.c
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0/4.1/4.2 regression] ICE incrementing an array

[mmitchel at gcc dot gnu dot org]

------- Comment #3 from mmitchel at gcc dot gnu dot org  2006-06-05 02:52 -------
Subject: Bug 27722

Author: mmitchel
Date: Mon Jun  5 02:52:37 2006
New Revision: 114383

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=114383
Log:
        PR c++/27819
        * decl.c (cp_finish_decl): Process initializers for static data
        members with non-dependent initializers, even in templates.
        PR c++/27722
        * decl.c (maybe_deduce_size_from_array_init): If the declaration
        is erroneous, give it an erroneous type.
        (layout_var_decl): If the type is erroneous, give up.
        (check_initializer): Likewise.
        PR c++/27807
        * cp-tree.h (TYPE_OBJ_P): New macro.
        (TYPE_PTROB_P): Use it.
        (TYPE_REF_OBJ_P): Likewise.
        * semantics.c (finish_compound_literal): Do not permit compound
        literals of non-object types.
        PR c++/27806
        * typeck.c (original_type): Robustify.
        PR c++/27819
        * g++.dg/template/static25.C: New test.
        PR c++/27722
        * g++.dg/init/array21.C: New test.
        PR c++/27807
        * g++.dg/ext/complit7.C: New test.

        PR c++/27806
        * g++.dg/parse/ptrmem5.C: New test.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/ext/complit7.C
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/init/array21.C
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/parse/ptrmem5.C
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/template/static25.C
Modified:
    branches/gcc-4_1-branch/gcc/cp/ChangeLog
    branches/gcc-4_1-branch/gcc/cp/cp-tree.h
    branches/gcc-4_1-branch/gcc/cp/decl.c
    branches/gcc-4_1-branch/gcc/cp/semantics.c
    branches/gcc-4_1-branch/gcc/cp/typeck.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0 regression] ICE incrementing an array

[mmitchel at gcc dot gnu dot org]

------- Comment #4 from mmitchel at gcc dot gnu dot org  2006-06-05 02:54 -------
Fixed in 4.1.2, 4.2.0.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|mark at codesourcery dot com|unassigned at gcc dot gnu
                   |                            |dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-06-05 02:54:59
               date|                            |
            Summary|[4.0/4.1/4.2 regression] ICE|[4.0 regression] ICE
                   |incrementing an array       |incrementing an array


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0 regression] ICE incrementing an array

[reichelt at gcc dot gnu dot org]

------- Comment #5 from reichelt at gcc dot gnu dot org  2006-06-06 14:21 -------
Btw, the fix for PR27804 fixed the problem on mainline before Mark's patch
went in. (This might be interesting for a backport to the 4.0 branch.)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722

[Bug c++/27722] [4.0 regression] ICE incrementing an array

[reichelt at gcc dot gnu dot org]

------- Comment #6 from reichelt at gcc dot gnu dot org  2007-01-31 23:16 -------
Seems to be fixed in GCC 4.0.4.


-- 

reichelt at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27722