Greetings!
Here is what we've been doing since early FC:
int
main(int argc, char **argv, char **envp) {
#ifdef NEED_NONRANDOM_SBRK
#if SIZEOF_LONG == 4
if (!syscall(SYS_personality,PER_LINUX32))
#else
if (!syscall(SYS_personality,PER_LINUX))
#endif
execvp(argv[0],argv);
#endif
so either:
1) configure is not detecting the situation and defining
NEED_NONRANDOM_SBRK
2) the syscall syntax is changed
3) the problem lies somewhere else
it would appear.
Take care,
Juho Snellman <[EMAIL PROTECTED]> writes:
> <[EMAIL PROTECTED]> wrote:
> > GCL-2.6.7 fails to build on FC4.
> > I'm trying to debug it now but I thought I'd mention it in case
> > anyone already knows why.
>
> FC4 randomizes the brk (and a bunch of other memory regions) more
> agressively than the exec-shield patches in previous Fedora kernels.
> Also the old methods of marking the executable as non-randomizable
> don't work any more. To test whether this is the reason, try building
> under setarch ("setarch i386 -R make").
>
> The only working method of disabling the randomization seems to be
> doing something like this at startup:
>
> {
> long pers = personality(-1);
> /* 0x40000 aka. ADDR_NO_RANDOMIZE */
> if (!(pers & 0x40000)) {
> personality(pers | 0x40000);
> execve(argv[0], argv, envp);
> }
> }
>
> See the sbcl-devel thread "Memory randomization problems coming" for
> some more information on this.
>
> --
> Juho Snellman
>
>
>
> _______________________________________________
> Gcl-devel mailing list
> [email protected]
> http://lists.gnu.org/mailman/listinfo/gcl-devel
>
>
>
--
Camm Maguire [EMAIL PROTECTED]
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