[LLVMdev] setjmp, longjmp and unwind

[Chris Lattner]

On Wed, 20 Apr 2005, Greg Pettyjohn wrote:
> I'm trying to get unwind to work.
>
> I was unable to get an unwind example to work directly,
> so I decided to compile a c program that uses setjmp
> and longjmp and work backwards.
>
> I keep running into a "Abort trap" problem, whatever "Abort trap" is.
>
> Anyway, here's an example of a C program that compiles
> and works properly under normal gcc, but that fails with
> an "Abort trap" under LLVM:
>
> #include <setjmp.h>
>
> long (*g_pfunc) ();
> jmp_buf g_jbuf;
>
> long foo() {
>    printf("Hello World!\n");
>    longjmp(g_jbuf, 0);
>    return 0;
> }
>
> main () {
>    g_pfunc = foo;
>
>    setjmp(g_jbuf);
>    g_pfunc();
> }
>
> I'm using Mac OS X version 10.3.8
> I just installed and build LLVM yesterday from CVS.

How are you compiling and running this program?

-Chris

-- 
http://nondot.org/sabre/
http://llvm.cs.uiuc.edu/