[PATCH] Reimplement aligned_alloc

[Corinna Vinschen]

On May 19 10:52, Szabolcs Nagy wrote:
> The original implementation had multiple issues:
> 
> - Only worked when posix_memalign was available (Linux, RTEMS).
> - Violated C11 link namespace rules by calling posix_memalign.
> - Failed to set errno on error.
> 
> These can be fixed by essentially using the same implementation
> for aligned_alloc as for memalign, i.e. simply calling _memalign_r
> (which is always available and a "more reserved name" although
> technically still not in the reserved link namespace, at least
> code written in c cannot define a colliding symbol, newlib has
> plenty such namespace issues so this is fine).
> 
> It is not clear what the right policy is when MALLOC_PROVIDED is set,
> currently that does not cover aligned_alloc so it is kept that way.
> 
> Tested on aarch64-none-elf
> ---
>  newlib/libc/stdlib/aligned_alloc.c | 62 +++++++++++++++---------------
>  1 file changed, 30 insertions(+), 32 deletions(-)

Pushed.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat