Re: [Tinycc-devel] longjmp not working on 64bit

[grischka]

Christian Jullien wrote:
> Simple example not working on Windows x64. It should print Ok but hangs even
> buf seems to be correctly aligned.

See http://repo.or.cz/w/tinycc.git/commitdiff/ad351b20

It doesn't support new x64 windows unwinding though, so better not
use it to jump across window procedures, threads and some such.

--- grischka

> #include <stdio.h>
> #include <stdlib.h>
> #include <setjmp.h>
>
> int
> main(int argc, char *argv[])
> {
>         jmp_buf  buf;
>
>         if (setjmp(buf) == 0) {
>                 printf("ready to jump at %p\n", &buf);
>                 longjmp(buf, 1);
>                 printf("Not reached\n");
>         }
>         printf("Ok\n");
>
>         return 0;
> }
>
> F:\tcc-0.9.25-64\win32>tcc foo.c && foo
> ready to jump at 000000000012FE20
>
> Looking at assembler gives me no clue.
>
> Christian