Re: [MIT-Scheme-devel] Attempted Clean-up of Mac OS X MIT Scheme Port

[Chris Hanson]

Jed Davis wrote:
> The trick for Mac OS X is to link with -Wl,-pagezero_size,04000000 (or
> however much space is needed).  This sets the size of the PROT_NONE area
> at the bottom of virtual memory that traps null pointer accesses; the
> linker will, necessarily, place all other load commands above it.  Then,
> one can mmap over it with MAP_FIXED, since it doesn't contain anything
> whose loss would be a problem.

Super!  I've patched configure.ac to do this.  I'd appreciate it if
someone with OS X would test it.