[PATCH] libstdc++-v3: Have aligned_alloc() on Newlib

[Jonathan Wakely]

On 09/08/18 06:56 +0200, Sebastian Huber wrote:
>On 08/08/18 16:33, Jonathan Wakely wrote:
>>On 08/08/18 16:22 +0200, Ulrich Weigand wrote:
>>>Jonathan Wakely wrote:
>>>
>>>>Aha, so newlib was using memalign previously:
>>>>
>>>>@@ -53,20 +54,24 @@ aligned_alloc (std::size_t al, std::size_t sz)
>>>>Â #else
>>>>Â extern "C" void *memalign(std::size_t boundary, std::size_t size);
>>>>Â #endif
>>>>-#define aligned_alloc memalign
>>>
>>>Yes, exactly ... this commit introduced the regression.
>>>
>>>>OK, I've regressed the branches then - I'll fix that.
>>
>>This should fix it. I'll finish testing and commit it.
>>
>>Sebastian, your patch to define HAVE_ALIGNED_ALLOC is OK for
>>gcc-7-branch and gcc-8-branch, because changing newlib from using
>>memalign to aligned_alloc is safe.
>
>Should I check in my patch in addition to your patch?

Yes please, on trunk and 7 and 8. It's better to use the standard
aligned_alloc if available.