[Bug c++/17473] New: typedef redefinition in struct is accepted

[Bug c++/17473] New: typedef redefinition in struct is accepted

[llib at computer dot org]

(accepts-illegal)
the following code
"""
struct S {
  typedef int Int;
  typedef int Int;
};
"""
is accepted by g++.  This is illegal according to 9.2/1
"""
A member shall not be be declared twice in the /member-
specification/, except that a nested class or member class
template can be declared and then later defined.
"""
Note that this conflicts with 7.1.3/2, but 9.2/1 is more specific (class-only
specification scopes).

-- 
           Summary: typedef redefinition in struct is accepted
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: llib at computer dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.9
  GCC host triplet: sparc-sun-solaris2.9
GCC target triplet: sparc-sun-solaris2.9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17473

[Bug c++/17473] typedef redefinition in struct is accepted

[wsf at fultondesigns dot co dot uk]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |wsf at fultondesigns dot co
                   |                            |dot uk


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17473

[Bug c++/17473] typedef redefinition in struct is accepted

[giovannibajo at libero dot it]

------- Additional Comments From giovannibajo at libero dot it  2004-09-17 02:15 -------
Confirmed, a regression from 2.95.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |giovannibajo at libero dot
                   |                            |it
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |accepts-invalid
      Known to fail|                            |3.0.4 3.2.2 3.3.1 3.3.4
                   |                            |3.4.0 4.0.0
      Known to work|                            |2.95
   Last reconfirmed|0000-00-00 00:00:00         |2004-09-17 02:15:01
               date|                            |
   Target Milestone|---                         |3.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17473

[Bug c++/17473] [3.3/3.4/4.0 Regression] typedef redefinition in struct is accepted

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-11-01 00:45 -------
Postponed until GCC 3.4.4.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.3                       |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17473

[Bug c++/17473] [3.3/3.4/4.0 Regression] typedef redefinition in struct is accepted

[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=17473

[Bug c++/17473] [3.3/3.4/4.0 Regression] typedef redefinition in struct is accepted

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-11-24 23:19 -------
Subject: Bug 17473

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-11-24 23:18:56

Modified files:
	gcc/cp         : ChangeLog name-lookup.c parser.c 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/g++.dg/template: typedef1.C 
	gcc/testsuite/g++.old-deja/g++.other: typedef7.C 
Added files:
	gcc/testsuite/g++.dg/parse: typedef7.C 
Removed files:
	gcc/testsuite/g++.dg/tc1: dr56.C 

Log message:
	PR c++/17473
	* name-lookup.c (supplement_binding): Do not allow typedefs to be
	redefined in class scope.
	
	PR c++/18285
	* parser.c (cp_parser_set_decl_type_spec): Do not try to allow
	redefinitions of builtin types other that "bool" or "wchar_t".
	
	PR c++/17473
	* g++.dg/tc1/dr56.C: Remove.
	* g++.dg/template/typedef1.C: Add dg-error markers.
	* g++.old-deja/g++.other/typedef7.C: Likewise.
	
	PR c++/18285
	* g++.dg/parse/typedef7.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4494&r2=1.4495
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/name-lookup.c.diff?cvsroot=gcc&r1=1.92&r2=1.93
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&r1=1.280&r2=1.281
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4644&r2=1.4645
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/tc1/dr56.C.diff?cvsroot=gcc&r1=1.2&r2=NONE
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/typedef1.C.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.old-deja/g++.other/typedef7.C.diff?cvsroot=gcc&r1=1.3&r2=1.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/typedef7.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17473

[Bug c++/17473] [3.3/3.4 Regression] typedef redefinition in struct is accepted

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-11-24 23:24 -------
Fixed in GCC 4.0.  

I do not intend to backport this to 3.4.x, as doing so would potentially break
code that works in 3.4.3, and has no semantic ambiguity.  

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
      Known to fail|3.0.4 3.2.2 3.3.1 3.3.4     |3.0.4 3.2.2 3.3.1 3.3.4
                   |3.4.0 4.0.0                 |3.4.0
      Known to work|2.95                        |2.95 4.0.0
         Resolution|                            |FIXED
            Summary|[3.3/3.4/4.0 Regression]    |[3.3/3.4 Regression] typedef
                   |typedef redefinition in     |redefinition in struct is
                   |struct is accepted          |accepted
   Target Milestone|3.4.4                       |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17473