Re: Crash with new-style exceptions on FreeBSD amd64

[Michael Gardner]

Thanks for the hint. I played around with my manual compile command,
and found that I can duplicate the crashing behavior of the gmake
build if I do *either* of the following two things:

1) Omit "-fobjc-exceptions" from the command I gave above:

g++41 -I$GNUSTEP_SYSTEM_ROOT/Library/Headers
-L$GNUSTEP_SYSTEM_ROOT/Library/Libraries -lobjc -lgnustep-base -o main
main.m

(same result if I use gcc instead of g++).

2) Split the linking into a separate step, *and* use gcc instead of g++:

gcc41 -c -fobjc-exceptions -I$GNUSTEP_SYSTEM_ROOT/Library/Headers -o
main.o main.m
gcc41 -L$GNUSTEP_SYSTEM_ROOT/Library/Libraries -lobjc -lgnustep-base
-o main main.o

(it doesn't crash if I use g++ instead of gcc, though). In both cases
(1) and (2), I get "Abort trap: 6 (core dumped)" when I run the
program, as with the gmake build. For reference, I've attached the
output of "gmake messages=yes", which does basically the same as (2)
above.

The fact that g++ works while gcc doesn't makes me think there's some
library that's not getting linked somewhere, but wouldn't the linker
yell at me in that case?

-Michael

On 3/14/07, Nicola Pero <address@hidden> wrote:
> make messages=yes
>
> will display exactly the command-line commands used to compile and link; you
> may
> want to try it out and compare those with the ones you use yourself ... that
> might
> provide some light on what the problem could be. :-)
>
> Thanks
>
>
>
> -----Original Message-----
> From: Michael Gardner <address@hidden>
> Sent: Wed, March 14, 2007 9:46 pm
> To: address@hidden
> Subject: Crash with new-style exceptions on FreeBSD amd64
>
> I'm having problems using "new-style" exceptions with GNUstep on
> FreeBSD 6.2 (amd64). I have the following program (main.m):
>
> #include <Foundation/Foundation.h>
> int main(int argc, char ** argv) {
>         @try {
>                 @throw nil;
>         } @catch (id thing) {
>                 printf("caught!\n");
>         }
> }
>
> which runs file when I compile it with:
>
> g++41 -fobjc-exceptions -I$GNUSTEP_SYSTEM_ROOT/Library/Headers
> -L$GNUSTEP_SYSTEM_ROOT/Library/Libraries -lobjc -lgnustep-base -o main
> main.m
>
> but crashes with an "Abort trap: 6 (core dumped)" when I compile it
> using gmake. I tried to run it under GDB, but all I get is this:
>
> warning: Unable to get location for thread creation breakpoint: generic
> error
> [New LWP 100171]
> Program terminated with signal SIGABRT, Aborted.
> The program no longer exists.
>
> I'm running the following versions of the GNUstep libraries (compiled
> from ports):
>
> gnustep-back-0.11.0
> gnustep-base-1.13.1
> gnustep-gui-0.11.0
> gnustep-make-1.13.0_4
>
> Any ideas or suggestions?
>
> -Michael
>
>
> _______________________________________________
> Gnustep-dev mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/gnustep-dev

gmake.out
Description: Binary data