[Bug c++/18177] New: [4.0 regression] ICE with const_cast for undeclared variable

[Bug c++/18177] New: [4.0 regression] ICE with const_cast for undeclared variable

[reichelt at gcc dot gnu dot org]

The following invalid code snippet causes an ICE when compiled with mainline:

=============================
void foo()
{
    X;
    const_cast<int&>(X);
}
=============================

bug.cc: In function `void foo()':
bug.cc:3: error: 'X' was not declared in this scope
bug.cc:4: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in build_pointer_type_for_mode, at tree.c:4118
Please submit a full bug report, [etc.]

The regression appeared in March 2004:
: Search converges between 2004-03-01-trunk (#446) and 2004-04-01-trunk (#447).

-- 
           Summary: [4.0 regression] ICE with const_cast for undeclared
                    variable
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, 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=18177

[Bug c++/18177] [4.0 regression] ICE with const_cast for undeclared variable

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-27 13:57 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-27 13:57:53
               date|                            |
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18177

[Bug c++/18177] [4.0 regression] ICE with const_cast for undeclared variable

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-10-27 14:29 -------
Mark, the regression appears with your patch for PR14401:
http://gcc.gnu.org/ml/gcc-cvs/2004-03/msg00427.html

Could you please have a look?


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at codesourcery dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18177

[Bug c++/18177] [4.0 regression] ICE with const_cast for undeclared variable

[mmitchel at gcc dot gnu dot org]

-- 
           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=18177

[Bug c++/18177] [4.0 regression] ICE with const_cast for undeclared variable

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-11-03 02:48 -------
Subject: Bug 18177

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-11-03 02:48:45

Modified files:
	gcc/cp         : ChangeLog parser.c typeck.c 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/g++.dg/parse: crash13.C 
Added files:
	gcc/testsuite/g++.dg/conversion: const3.C 
	gcc/testsuite/g++.dg/template: crash25.C typedef2.C 

Log message:
	PR c++/18124
	* parser.c (cp_parser_type_parameter): Robustify.
	
	PR c++/18155
	* parser.c (cp_parser_single_declaration): Disallow template
	typedefs.
	
	PR c++/18177
	* typeck.c (build_const_cast): Use error_operand_p.
	
	PR c++/18124
	* g++.dg/template/crash25.C: New test.
	
	PR c++/18155
	* g++.dg/template/typedef2.C: New test.
	* g++.dg/parse/crash13.C: Adjust error markers.
	
	PR c++/18177
	* g++.dg/conversion/const3.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4471&r2=1.4472
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&r1=1.275&r2=1.276
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&r1=1.591&r2=1.592
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4537&r2=1.4538
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/conversion/const3.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/crash13.C.diff?cvsroot=gcc&r1=1.2&r2=1.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/crash25.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/typedef2.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18177

[Bug c++/18177] [4.0 regression] ICE with const_cast for undeclared variable

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-11-03 02:56 -------
Fixed in GCC 4.0.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18177

[Bug c++/18177] [4.0 regression] ICE with const_cast for undeclared variable

[cvs-commit at gcc dot gnu dot org]

------- Comment #5 from cvs-commit at gcc dot gnu dot org  2005-10-11 00:39 -------
Subject: Bug 18177

CVSROOT:        /cvs/gcc
Module name:    gcc
Branch:         gcc-3_4-branch
Changes by:     reichelt@gcc.gnu.org    2005-10-11 00:39:26

Modified files:
        gcc/cp         : ChangeLog cvt.c name-lookup.c typeck.c 
        gcc/testsuite  : ChangeLog 
Added files:
        gcc/testsuite/g++.dg/lookup: crash5.C forscope2.C 
        gcc/testsuite/g++.dg/conversion: const3.C 

Log message:
        Backport:
        2004-09-23  Andrew Pinski  <pinskia@physics.uc.edu>
        PR c++/17618
        * cvt.c (cp_convert_to_pointer): Return early when the type is
        an error_mark_node.

        2004-05-22  Roger Sayle  <roger@eyesopen.com>
        * name-lookup.c (check_for_out_of_scope_variable): Avoid ICE by
        returning when TREE_TYPE is error_mark_node.
        * typeck.c (require_complete_type): Return error_mark_node if
        value's type is an error_mark_node.

        2004-11-02  Mark Mitchell  <mark@codesourcery.com>
        PR c++/18177
        * typeck.c (build_const_cast): Use error_operand_p.

        2004-09-23  Andrew Pinski  <pinskia@physics.uc.edu>
        PR c++/17618
        * g++.dg/lookup/crash5.C: New test.

        2004-05-22  Wolfgang Bangerth  <bangerth@dealii.org>
        Roger Sayle  <roger@eyesopen.com>
        * g++.dg/lookup/forscope2.C: New test case.

        2004-11-02  Mark Mitchell  <mark@codesourcery.com>
        PR c++/18177
        * g++.dg/conversion/const3.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3892.2.245&r2=1.3892.2.246
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cvt.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.151.4.4&r2=1.151.4.5
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/name-lookup.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.34.2.25&r2=1.34.2.26
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.519.2.30&r2=1.519.2.31
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.440&r2=1.3389.2.441
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/lookup/crash5.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.70.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/lookup/forscope2.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.76.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/conversion/const3.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.48.1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18177