[ECOS] Re: dlmalloc-2.6.4.c MALLOC_COPY broken?

Dave Lawrence dlawrence@ad-holdings.co.uk
Tue Jan 8 11:25:00 GMT 2008


Andrew Lunn wrote:

> I don't see how this can result in overlapping memory. newptr is a new
> block of memory, so it is not possible that it overlaps with ptr.

I agree.  Infact it is 2.6.6 that is broken (sorry for the confusion). 
This version attempts to extend the block forwards or backwards in 
preference to allocating a completely new block.  If the increase in 
size is less then a factor of two then the resulting copy will overlap.

dlmalloc.cxx in the anon CVS seems to be based on 2.6.6.



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