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mirror of git://sourceware.org/git/newlib-cygwin.git synced 2025-02-19 07:22:14 +08:00
Szabolcs Nagy 0f785536f3 Reimplement aligned_alloc
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
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
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