Re: c++/9228: [3.4 regression] [New parser] SegFault on illegal template

Re: c++/9228: [3.4 regression] [New parser] SegFault on illegal template

[reichelt]

Synopsis: [3.4 regression] [New parser] SegFault on illegal template

State-Changed-From-To: open->closed
State-Changed-By: reichelt
State-Changed-When: Wed Jan 15 01:22:03 2003
State-Changed-Why:
    Fixed in gcc 3.4-20030113.
    I now get
    
    PR9228.cc:1: error: expected nested-name-specifier
    PR9228.cc:1: error: expected function-definition
    
    for both code snippets.
    
    (Testcase in preparation.)

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9228

Re: c++/9228: [3.4 regression] [New parser] SegFault on illegal template

[Wolfgang Bangerth]

The following reply was made to PR c++/9228; it has been noted by GNATS.

From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: c++/9228: [3.4 regression] [New parser] SegFault on illegal
 template
Date: Wed, 8 Jan 2003 10:34:28 -0600 (CST)

 Possibly related:
 ------------------------
 struct O {
     struct I { I (int); };
 };
 
 template <class T_>
 typename O<T_>::I f () { return 1; };
 -------------------------
 
 deal.II/base> /home/bangerth/bin/gcc-3.3-pre/bin/c++ -c g.cc
 g.cc:6: error: non-template type `O' used as a template
 g.cc:6: error: `I' is not a class or namespace
 g.cc:6: error: ISO C++ forbids declaration of `f' with no type
 deal.II/base>
 deal.II/base>
 deal.II/base> /home/bangerth/bin/gcc-3.4-pre/bin/c++ -c g.cc
 g.cc:6: internal compiler error: Segmentation fault
 Please submit a full bug report,
 with preprocessed source if appropriate.
 See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
 
 
 -------------------------------------------------------------------------
 Wolfgang Bangerth             email:            bangerth@ticam.utexas.edu
                               www: http://www.ticam.utexas.edu/~bangerth/
 
 

c++/9228: [3.4 regression] [New parser] SegFault on illegal template

[bangerth]

>Number:         9228
>Category:       c++
>Synopsis:       [3.4 regression] [New parser] SegFault on illegal template
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 08 07:56:02 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     bangerth@ticam.utexas.edu
>Release:        unknown-1.0
>Organization:
>Environment:
3.4 with new parser
>Description:
This is a new ICE on this little illegal piece of code:
--------------------------------
template <class T>
typename O<T>::I f () {}
--------------------------------
Since O is not a declared class, this should fail, and
indeed does with 3.3:
  deal.II/base> /home/bangerth/bin/gcc-3.3-pre/bin/c++ -c d.cc
  d.cc:2: error: parse error before `<' token

However, with 3.4 I now get
  deal.II/base> /home/bangerth/bin/gcc-3.4-pre/bin/c++ -c d.cc
  d.cc:2: internal compiler error: Segmentation fault
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

What's a little annoying is that the ICE happens before
any message is written, so it is not obvious right away
what's wrong.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: