[Bug c++/28346] New: [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[Bug c++/28346] New: [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[reichelt at gcc dot gnu dot org]

The following invalid code snippet triggers an ICE since GCC 4.0.0:

=========================================
template<int> struct A
{
    int& i;
    A();
    ~A() { &A::i; }
};

A<0> a;
=========================================

bug.cc: In destructor 'A<<anonymous> >::~A() [with int <anonymous> = 0]':
bug.cc:9:   instantiated from here
bug.cc:6: internal compiler error: in gimplify_expr, at gimplify.c:5763
Please submit a full bug report, [etc.]

Before we got the error message:

bug.cc: In destructor `void A<<anonymous> >::A() [with int <anonymous> = 0]':
bug.cc:9:   instantiated from here
bug.cc:6: cannot create pointer to reference member `A<0>::i'


-- 
           Summary: [4.0/4.1/4.2 regression] ICE creating pointer-to-
                    reference-member
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, 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=28346

[Bug c++/28346] [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[reichelt at gcc dot gnu dot org]

-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[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=28346

[Bug c++/28346] [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[janis at gcc dot gnu dot org]

------- Comment #1 from janis at gcc dot gnu dot org  2006-08-12 21:37 -------
A regression hunt on powerpc-linux identified the following patch:

    http://gcc.gnu.org/viewcvs?view=rev&rev=93055

    r93055 | nathan | 2005-01-07 17:09:15 +0000 (Fri, 07 Jan 2005)


-- 

janis at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[reichelt at gcc dot gnu dot org]

------- Comment #2 from reichelt at gcc dot gnu dot org  2006-08-14 19:04 -------
Confirmed by Janis.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-08-14 19:04:06
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |mark at codesourcery dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0/4.1/4.2 regression] ICE creating pointer-to-reference-member

[mmitchel at gcc dot gnu dot org]

------- Comment #3 from mmitchel at gcc dot gnu dot org  2006-08-20 23:53 -------
Subject: Bug 28346

Author: mmitchel
Date: Sun Aug 20 23:53:10 2006
New Revision: 116276

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116276
Log:
        PR c++/28341
        * tree.c (cast_valid_in_integral_constant_expression_p): New
        function.
        * cp-tree.h (tsubst_copy_and_build): Adjust prototype.
        * pt.c (tsubst_expr): Add integral_constant_expression_p
        parameter.
        (fold_non_dependent_expr): Adjust callers of
        tsubst_{expr,copy_and_build}.
        (tsubst_friend_function): Likewise.
        (tsubst_template_arg): Likewise.
        (tsubst_default_argument): Likewise.
        (tsubst_decl): Likewise.
        (tsubst): Likewise.
        (tsubst_omp_clasuses): Likewise.
        (regenerate_decl_fromp_template): Likewise.
        (instantiate_decl): Likewise.
        (tsubst_initializer_list): Likewise.
        (tsubst_enum): Likewise.
        (tsubst_expr): Use RECUR throughout.
        (tsubst_copy_and_build): Change definition of RECUR.  Do not allow
        invalid casts in integral constant expressions.
        * parser.c (cp_parser_postfix_expression): Use
        cast_valid_in_integral_constant_expression_p.
        (cp_parser_cast_expression): Likewise.
        (cp_parser_functional_cast): Likewise.

        PR c++/28346
        * pt.c (tsubst_qualified_id): Do not strip references from
        OFFSET_REFs. 

2006-08-20  Mark Mitchell  <mark@codesourcery.com>

        PR c++/28341
        * g++.dg/template/ref3.C: New test.
        * g++.dg/template/nontype13.C: New test.

        PR c++/28346
        * g++.dg/template/ptrmem17.C: New test.


2006-08-20  Mark Mitchell  <mark@codesourcery.com>

        * objcp-lang.c (objcp_tsubst_copy_and_build): Adjust call to
        tsubst_copy_and_build.

Added:
    trunk/gcc/testsuite/g++.dg/template/ptrmem17.C
    trunk/gcc/testsuite/g++.dg/template/ref3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/parser.c
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/tree.c
    trunk/gcc/objcp/ChangeLog
    trunk/gcc/objcp/objcp-lang.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/template/nontype13.C


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0/4.1 regression] ICE creating pointer-to-reference-member

[mmitchel at gcc dot gnu dot org]

------- Comment #4 from mmitchel at gcc dot gnu dot org  2006-08-20 23:59 -------
Fixed in 4.2.0.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.0/4.1/4.2 regression] ICE|[4.0/4.1 regression] ICE
                   |creating pointer-to-        |creating pointer-to-
                   |reference-member            |reference-member


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0 regression] ICE creating pointer-to-reference-member

[mmitchel at gcc dot gnu dot org]

------- Comment #6 from mmitchel at gcc dot gnu dot org  2006-08-21 00:42 -------
Subject: Bug 28346

Author: mmitchel
Date: Mon Aug 21 00:41:50 2006
New Revision: 116283

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116283
Log:
        PR c++/28346
        * pt.c (tsubst_qualified_id): Do not strip references from
        OFFSET_REFs. 
        PR c++/28346
        * g++.dg/template/ptrmem17.C: New test.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/template/ptrmem17.C
Modified:
    branches/gcc-4_1-branch/gcc/cp/ChangeLog
    branches/gcc-4_1-branch/gcc/cp/pt.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0 regression] ICE creating pointer-to-reference-member

[mmitchel at gcc dot gnu dot org]

------- Comment #5 from mmitchel at gcc dot gnu dot org  2006-08-21 00:42 -------
Fixed in 4.1.2.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.0/4.1 regression] ICE    |[4.0 regression] ICE
                   |creating pointer-to-        |creating pointer-to-
                   |reference-member            |reference-member


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0 regression] ICE creating pointer-to-reference-member

[reichelt at gcc dot gnu dot org]

------- Comment #8 from reichelt at gcc dot gnu dot org  2006-10-05 23:29 -------
I meant Jason's patch for PR 26696, of course.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0 regression] ICE creating pointer-to-reference-member

[reichelt at gcc dot gnu dot org]

------- Comment #7 from reichelt at gcc dot gnu dot org  2006-10-05 23:28 -------
Because of Jason's patch for PR 28346 the code is now wrongly accepted
on the 4.0 branch. With a slightly different testcase I can still
trigger the ICE, though:

==========================================
bool b;

template<int> struct A
{
    int& i;
    A();
    ~A() { b = (&A::i == &A::i); }
};

A<0> a;
==========================================


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346

[Bug c++/28346] [4.0 regression] ICE creating pointer-to-reference-member

[gdr at gcc dot gnu dot org]

------- Comment #9 from gdr at gcc dot gnu dot org  2007-02-03 18:02 -------
Fixed in GCC-4.1.2.


-- 

gdr at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.0.4                       |4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28346