g++ ice with ostringstream on x86 linux

[Jim Randall <jim at freedomintelligence dot com>]

hey there....

Sadly, I've bumped into an internal compiler error in gcc V3 on
some C++ code.  Unfortunately it includes sstream and string, so I
couldn't get the .i file down very small.  The trimmed .cpp file is
about 30 lines or so, though.  Here's the stats:

gcc -v produces:
Reading specs from /home/jim/usr/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: ./configure --prefix=/home/jim/usr : (reconfigured) 
Thread model: single
gcc version 3.1 20010614 (experimental)

Reproduce with:
g++ ice.i

Compiler output:
ice.cpp: In function `void foo2()':
ice.cpp:28: Internal compiler error in genrtl_compound_stmt, at c-semantics.c:
   678
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

The only option given when gcc was built was --prefix=/home/jim/usr.
The only patch I've done to the compiler was as tweak to get libstdc++
loading in crtstuff.c:

158c158
< #ifdef HAVE_GAS_HIDDEN
---
> #if 0 // JRR was defined( HAVE_GAS_HIDDEN )

When __dso_handle was declared hidden, the loader was having a hard time
finding it, and I was getting problems loading libstdc++-v3

The source on my machine is current as of midday, June 14th, and no
changes have been made to c-semantics.c since.

My system is SuSE 6.4, using the stock 2.2.14-SMP kernel, if that matters.

Please let me know if I can be of any help, or if I've missed anything.
Criticism for screwing up the bug report is also accepted :-)
Both gnatsweb and gccbug gave me grief, so this was the best I could do.
I can be contacted at jim@jointtechnology.com

At the end of this message I've included a copy of the unpreprocessed
source file if you want it.  The preprocesed file is in the attachment,
compressed with gzip.

have fun.....

------- jim.

------ 8x cut here -------

#include <sstream>
#include <string>

using namespace std;

extern bool Lex2Maple( ostream &o );
extern void fn2( const char * );

void foo2( void )
{
    ostringstream *tStrStream = NULL;
    ostringstream hStream, fStream;
    unsigned int i;


    for( i = 0; i < 2; ++i ) {
        switch( i ) {
	case 0:
	    Lex2Maple(hStream);
	    tStrStream = &hStream;
	    break;
	case 1:
	    Lex2Maple(fStream);
	    tStrStream = &fStream;
	    break;
	}
	string finalStr = tStrStream->str();
	fn2( finalStr.c_str() );
    }
}

ice.i.gz