Re: bootstrap & memory allocation troubles

[Stefan Monnier <monnier@iro.umontreal.ca>]

> Recently, the malloc() implementation in FreeBSD changed to a new
> implementation by Jason Evans, and a posix_memalign() implementation
> was added to the standard library of the system.

> This seems to cause bootstrap problems for cvs-emacs now, but I'm not
> sure if this is something we should fix in Emacs or in the libc of
> FreeBSD.  The gdb trace that shows the problem is listed below, but
> I'd be grateful for any hints related to fixing this.

> What is surprising is that the Lisp_String allocated internally by
> allocate_string_data is supposed to have a size of 50 bytes, but
> trying to access any byte after its 40'th character results in
> ``inaccessible memory'' faults in gdb (and is probably the reason why
> bootstrap fails).

> Any ideas how the current posix_memalign() implementation could affect
> this, and/or tips to debug it?

Can you try and undefine HAVE_POSIX_MEMALIGN so as to tell Emacs not to
use it, so we can see if it's related or if it's a completely
different problem (maybe a problem with unexec)?


        Stefan