sbrk(2) broken

Scott Long scottl at
Thu Jan 3 14:24:04 PST 2008

Dag-Erling Smørgrav wrote:
> Jason Evans <jasone at> writes:
>> [sbrk is broken]
> The real question is why we would revert perfectly good code (jemalloc)
> from using a modern interface to using one that has been obsolete for
> twenty years, and marked as such in the man page for seven years.
> If rwatson@ wants malloc() to respect resource limits, he can bloody
> well fix mmap().  Until he does, the datasize limit is a joke anyway, as
> anyone can circumvent it by either using mmap() instead of malloc() or
> setting _malloc_options before calling malloc().

That is a pretty damning argument in my mind.  Why make such a major 
change right before the release when it's effectively useless?


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