[Bug target/55610] cc1 is calling munmap() on part of itself on darwin

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55610

--- Comment #1 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-12-06 15:25:04 UTC ---
This was originally opened as http://llvm.org/bugs/show_bug.cgi?id=14140 but
closed there now as it is determined to be a latent bug in FSF gcc's
darwin_gt_pch_use_address call. Also, Nick was able to completely back trace
this issue because gcc defaults now to -fomit-frame-pointers. We will need to
revert that change in order to get a complete backtrace out of cc1.