libc: fix needless malloc failures

The NetBSD libc malloc implementation performs its own out-of-memory
check, presumably for performance reasons.  The check makes a strong
assumption about the address space layout, which is that memory-
mapped pages are always located above the heap.  However, this
assumption does not necessarily hold on MINIX3, thus resulting in
malloc reporting an out-of-memory condition without the system
actually being out of memory at all.  Evidence suggests that in
particular dynamically linked (i.e., pkgsrc) binaries were affected
by this issue - most notably git.

Change-Id: If542fbace0a1cce12aa9e075d51992cbbbf26e94

0 files changed, 0 insertions, 0 deletions