Call for testers: libiberty/physmem.c

[Mike Stump]

On Monday, February 24, 2003, at 06:34 PM, Zack Weinberg wrote:
> I have a theory.
>
> My theory is that, on Darwin, RLIMIT_DATA is applied only to memory
> allocation via brk(),

A multitude of bad behavior stops me from testing your theory.  sbrk 
wraps and never fails.  Touching memory dies way too soon, not sure 
why.  [ trying harder ]  Ok, no, it doesn't apply in that case either.  
It is ignored.

> One way to confirm or falsify this theory would be to write a mini
> program that allocates and dirties memory, using malloc, and see if
> it maxes out at RLIMIT_DATA or RLIMIT_AS.

malloc swicthes over to mmap for larger things.  When I use things that 
are small enough, neither stop it from allocating more than these 
limits.