GCC Bugzilla Bug 13166

The problem occurs while compiling systemc with gcc 3.4. It compiles normally
with gcc 3.3 
The details: 

$gcc -v 
Reading specs from /home/rafael/gcc_main/lib/gcc/i686-pc-linux-gnu/3.4/specs 
Configured with: ../gcc_main/configure --prefix=/home/rafael/gcc_main
--enable-languages=c,c++ 
Thread model: posix 
gcc version 3.4 20031122 (experimental) 

Command: 
 g++ -O3 -c sc_bv_base.ii 

g++ output: 
 g++ -O3 -c  src/systemc/datatypes/bit/sc_bv_base.ii  
In file included from ../../../../src/systemc/datatypes/bit/sc_proxy.h:51, 
                 from
../../../../src/systemc/datatypes/bit/sc_bit_proxies.h:41, 
                 from ../../../../src/systemc/datatypes/bit/sc_bv_base.h:41, 
                 from sc_bv_base.cpp:38: 
../../../../src/systemc/datatypes/int/sc_unsigned.h:1939: internal compiler
error: Falha de segmentação 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Created an attachment (id=5193) [edit]
the file that  triggers the bug

Confirmed. Test case:

namespace sc_dt {
    class sc_length_param {
	friend int compare_unsigned(int if_v_signed = 0);
    };
}

Nathan's patch for PR 9162

http://gcc.gnu.org/ml/gcc-cvs/2003-07/msg00137.html

caused the regression.

Subject: Bug 13166

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	lerdsuwa@gcc.gnu.org	2003-12-05 14:45:00

Modified files:
	gcc/cp         : ChangeLog parser.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/parse: defarg6.C 

Log message:
	PR c++/13166
	* parser.c (cp_parser_late_parsing_default_args): Make sure the
	context is a class before calling push_nested_class and
	pop_nested_class.
	
	* g++.dg/parse/defarg6.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.3781&r2=1.3782
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&r1=1.126&r2=1.127
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3230&r2=1.3231
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/defarg6.C.diff?cvsroot=gcc&r1=NONE&r2=1.1

The regression is fixed in the mainline.  So it no longer ICE.
However the behavior mentioned in DR136 (limiting which friend
declaration can have default function argument) is not yet implemented.
So I keep this bug report open, change keywords into an accept-invalid
and adjust the summary accordingly.

Won't work on it for a long while.