From owner-freebsd-hackers  Tue Jun  8  9: 3:11 1999
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Date: Tue, 8 Jun 1999 12:03:03 -0400 (EDT)
From: Thomas David Rivers <rivers@dignus.com>
Message-Id: <199906081603.MAA07762@lakes.dignus.com>
To: joe@pavilion.net, rivers@dignus.com
Subject: Re: Wierd behavour from G++28!
Cc: hackers@FreeBSD.ORG
In-Reply-To: <19990608165022.B64790@pavilion.net>
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> On Tue, Jun 08, 1999 at 10:45:39AM -0400, Thomas David Rivers wrote:
> > > (gdb) bt
> > > #0  0x8052c0f in ostream::flush () at /usr/include/ctype.h:149
> > > #1  0x8052912 in ostream::operator<< () at /usr/include/ctype.h:149
> > > #2  0x804995f in main (argc=1, argv=0xbfbfdb54) at search.c:219
> > > (gdb) l
> > > 
>  
> >  Or - it could be that the stream wasn't properly opened and no-one
> > checked for it...
> > 
> >  Look at line 219 in search.c, it should be a <<-operator operating
> > on a stream of some kind.  Then, find where that stream is 
> > declared/constructed and ensure everything is all right...
> 
> 216        file_vector<char> the_index( index_file_name );
> 217        if ( !the_index ) {
> 218                cerr    << me << ": could not read index from "
> 219                        << index_file_name << endl;
> 220                ::exit( 2 );
> 221        }
> 
> 
> 	(gdb) break 218
> 	Breakpoint 1 at 0x8049941: file search.c, line 218.
> 	(gdb) run
> 	Starting program: /data/home/joe/src/swish/swish++-2.0/search 
> 
> 	Breakpoint 1, main (argc=1, argv=0xbfbfdb14) at search.c:219
> 	219                             << index_file_name << endl;
> 	(gdb) print index_file_name
> 	$1 = 0x806bfe2 "the.index"
> 	(gdb) print me
> 	$2 = 0xbfbfdc35 "search"
> 	(gdb) print cerr
> 	$3 = 134671820
> 	(gdb) print endl
> 	$4 = {<text variable, no debug info>} 0x8052d20 <endl(ostream &)>
> 	(gdb) s
> 	0x80528ed in ostream::operator<< () at /usr/include/ctype.h:149
> 	149     }
> 	(gdb) s
> 
> 	Program received signal SIGSEGV, Segmentation fault.
> 	0x8052c0f in ostream::flush () at /usr/include/ctype.h:149
> 	149     }
> 
> Is it because the program's compiled using the wrong includes?
> (/usr/include/ctype.h && /usr/local/bin/g++28)

 I was guessing that the stream may be wrong - but cerr is likely
correctly constructed...

 You may have mixed up the libraries somehow when you linked... but
I'll have to defer that to someone who's used gcc2.8...

	- Dave Rivers -



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