Still an Exception(al) Failure

[Chip Salzenberg <chip at valinux dot com>]

I wrote earlier:
> When linked with libstdc++-v3, a tiny test program can't catch any
> exceptions....

Well, it's *still* happening.

Could someone who understands how exceptions work tell me what to look
for?  I'm currently quite ignorant of egcs exception handling.


> 
> ----------------------------------------------------------------
> #include <iostream>
> #include <string>
> 
> using namespace std;
> main()
> {
>     try { throw string("x"); }
>     catch (const string &s) { cout << s << endl; }
> }
> ----------------------------------------------------------------
> 
> My g++ is the current CVS snapshot:
> 
> $ /u/egcs/bin/g++ -v
> Reading specs from /u/egcs/bin/../lib/gcc-lib/i686-pc-linux-gnu/2.96/specs
> gcc version 2.96 19991207 (experimental)
> 
> ... with -fsquangle and -fhonor-std on by default.
> 
> Here's a backtrace.
> 
> Help?!
> 
> ----------------------------------------------------------------------------
> $ gdb ./a.out
> GNU gdb 19990928
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i686-pc-linux-gnu"...
> (gdb) run
> Starting program: /u/src/perl/topaz/current/./a.out 
> 
> Program received signal SIGABRT, Aborted.
> 0x2525d1 in kill () from /lib/libc.so.6
> (gdb) where
> #0  0x2525d1 in kill () from /lib/libc.so.6
> #1  0x2522b8 in raise () from /lib/libc.so.6
> #2  0x253911 in abort () from /lib/libc.so.6
> #3  0x1890f5 in get_reg_addr () from /u/egcs/lib/libstdc++.so.3
> #4  0x1891ab in next_stack_level (pc=0x80499c2, udata=0xbffff9a4, 
>     caller_udata=0xbffff92c) from /u/egcs/lib/libstdc++.so.3
> #5  0x1893b6 in throw_helper (eh=0x2108fc, pc=0x80499c2, my_udata=0xbffffa64, 
>     offset_p=0xbffffa60) from /u/egcs/lib/libstdc++.so.3
> #6  0x189618 in __throw () from /u/egcs/lib/libstdc++.so.3
> #7  0x80499c3 in main () at tt.cc:7
> (gdb) 
> ----------------------------------------------------------------------------
> 
> -- 
> Chip Salzenberg             - a.k.a. -              <chip@valinux.com>
>      "Fleagal.  Bingo.  Drooper.  Snork.  They're cops."   //MST3K
> 

-- 
Chip Salzenberg             - a.k.a. -              <chip@valinux.com>
     "Fleagal.  Bingo.  Drooper.  Snork.  They're cops."   //MST3K