So it seems to be "distro" related....hmmm...
Anyone from Red-Hat wanna' chime in on this one?
On Sun, 2003-07-06 at 15:52, John wrote:
> On 6 Jul 2003, Sean Bruno wrote:
>
> > I have been troubleshooting an issue with a multi-threaded application
> > port from Solaris X86 to Linux.
> >
> > It was randomly dumping core on "main" or other random parts of code.
> >
> > After hacking on the issue for about a week, I decided to write a little
> > hello world program and compile it with the same options as my
> > application. Lo-and-behold it cored in the same manner, randomly and
> > confusingly.
> >
> > I then began to pare off flags and includes and libraries until, as if
> > by magic, it began to work!
> >
> > It turned out that there is an existing issue all the way back to RH 7.2
> > with the compile option "-fstack-check" Here is my sample prog:
> >
> > int main()
> > {
> > printf ("Hello World\n");
> > return(0);
> > }
> >
> >
> > compile with: gcc -fstack-check -o test
> >
> > Run the output program up to 10 times. It should core dump at least
> > once...Is this a bug in the kernel, compiler or standard libs?
>
> I'm running Debian/Woody.
> summer@xxxxxx:~/test$ gcc -fstack-check -o test fstack-check.c
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ ./test
> Hello World
> summer@xxxxxx:~/test$ gcc --version
> 2.95.4
> summer@xxxxxx:~/test$
> THis is okay too:
> summer@xxxxxx:~/test$ gcc-3.0 --version
> 3.0.4
> summer@xxxxxx:~/test$
> My glibc:
> summer@xxxxxx:~/test$ ldd --version
> ldd (GNU libc) 2.2.5
> Copyright (C) 2002 Free Software Foundation, Inc.
>
> However, ...
> [summer@xxxxxx test]$ gcc -fstack-check -o test fstack-check.c
> [summer@xxxxxx test]$ ./test
> Hello World
> [summer@xxxxxx test]$ ./test
> Hello World
> [summer@xxxxxx test]$ ./test
> Hello World
> [summer@xxxxxx test]$ ./test
> Hello World
> [summer@xxxxxx test]$ ./test
> Segmentation fault
> [summer@xxxxxx test]$ ./test
> Segmentation fault
> [summer@xxxxxx test]$ ./test
> Segmentation fault
> [summer@xxxxxx test]$ ./test
> Segmentation fault
> [summer@xxxxxx test]$ ./test
> Hello World
> [summer@xxxxxx test]$ gcc --version
> 2.96
> [summer@xxxxxx test]$ ldd --version
> ldd (GNU libc) 2.2.5
> Copyright (C) 2002 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions. There is
> NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> PURPOSE.
> Written by Roland McGrath and Ulrich Drepper.
> [summer@xxxxxx test]$
> Magpie is running Clark Connect release 0.9.1 which is basically Red Hat
> Linux release 7.3 (Valhalla)
--
Sean Bruno
Telecommunications Engineer
Metro One Telecommunications
Desk (503)524-1632
Cell (503)358-6832
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