Re: c++/8906: [3.2/3.3 regression] segmentation fault when parsing nested-class definition

Re: c++/8906: [3.2/3.3 regression] segmentation fault when parsing nested-class definition

[bangerth]

Old Synopsis: G++ 3.2 raises segmentation fault when parsing nested-class definition
New Synopsis: [3.2/3.3 regression] segmentation fault when parsing nested-class definition

State-Changed-From-To: open->analyzed
State-Changed-By: bangerth
State-Changed-When: Wed Dec 11 17:18:33 2002
State-Changed-Why:
    Confirmed. It used to work until 3.0, but fails with 3.2
    and 3.3. Here's the code:
    ---------------------
    template <class T> class CO {
        class CI1 {
            class CI2;
        };
    };
    
    template <class T>
    class CO<T>::CI1::CI2 {};
    ---------------------
    
    Using my GNU-compiler-collection, I see that this regression
    has been introduced in the first half of July:
    ../bin/gcc-2002-06-15 +
    ../bin/gcc-2002-07-01 +
    ../bin/gcc-2002-07-15 X
    ../bin/gcc-2002-08-01 X

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8906

Re: c++/8906: [3.2/3.3 regression] segmentation fault when parsing nested-class definition

[Janis Johnson]

The following reply was made to PR c++/8906; it has been noted by GNATS.

From: Janis Johnson <janis187@us.ibm.com>
To: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, wirawan0@softhome.net,
   gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org, jason@redhat.com
Cc:  
Subject: Re: c++/8906: [3.2/3.3 regression] segmentation fault when parsing 
 nested-class definition
Date: Thu, 12 Dec 2002 17:40:03 -0800

 The mainline regression reported in PR c++/8906 showed up
 starting with this patch, which might merely uncover an
 existing problem:
 
 >2002-07-10  Jason Merrill  <jason@redhat.com>
 >
 >       PR c++/6255
 >       * decl.c (lookup_name_real): Build a new TYPENAME_TYPE rather
 than
 >       modifying the old one.
 
 I used the small test case that Wolfgang provided.  The ICE
 occurs in the mainline, the 3.2 branch, 3.2.1, 3.2, and
 3.1.1, but not 3.1.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8906