Re: [libcvd-members] Aligned mem crashes ?

[Edward Rosten]

On Sun, 26 Nov 2006, twd20 wrote:

> Georg
>
> My solution to this is to not use libcvd's aligned_mem stuff but to
> provide a malloc() which overwrites the weak symbol in glibc and calls
> posix_memalign() with an alignment of 16.
>
> This means that all new()s or malloc()s will return 16 aligned memory
> (wasting an average of 4 bytes a go) - but it means that all the aligned
> stuff just works.

One of the problems with this replacement is that it doesn't work with 
debugging stuff that overrides malloc. On the other hand, none of that 
seems to work on my system anyway, so it's not such a bad thing, since one 
could put _working_ debugging stuff in the new malloc if necessary...

You could also replace some of the internals of aligned_mem with 
posix_memalign instead of new char. Of course, you don't get the benefit 
for std::vectors then.

-Ed