Android doesn't have posix_memalign(), so use memalign()

src/shared/platform/posix/aligned_malloc.c

Index: src/shared/platform/posix/aligned_malloc.c
===================================================================
--- src/shared/platform/posix/aligned_malloc.c	(revision 10167)
+++ src/shared/platform/posix/aligned_malloc.c	(working copy)
@@ -8,12 +8,15 @@
 
 #include <stdlib.h>
 
-

[Mark Seaborn, 2012/11/02 15:35:57]

Don't change the spacing unnecessarily, please.  Two lines after the #includes
was intentional.

[Nikolay, 2012/11/06 11:09:05]

Done.

 void *NaClAlignedMalloc(size_t size, size_t alignment) {
+#if NACL_ANDROID
+  return memalign(alignment, size);

[Mark Seaborn, 2012/11/02 15:35:57]

Android added posix_memalign() in December 2011 in
https://android.googlesource.com/platform/bionic.git/+/85aad909560508410101c1....

What Android versions are you targeting?  Please add a comment here saying which
old version you're targeting that didn't have posix_memalign() and add a TODO to
remove this when the old version is obsolete.

Also comment that, in general, memalign() is not guaranteed to return a pointer
that can be passed to free(), but it does with Android's Bionic C library.

[Nikolay, 2012/11/06 11:09:05]

Done.

+#else
   void *block;
   if (posix_memalign(&block, alignment, size) != 0)
     return NULL;
   return block;
+#endif
 }
 
 void NaClAlignedFree(void *block) {