<[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
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