commit 82a5de7bf7f8f33bad24d017f30c52a4ff00d88e
author Manuel Pégourié-Gonnard <mpg@elzevir.fr> Mon May 05 14:05:24 2014 +0200
committer Paul Bakker <p.j.bakker@polarssl.org> Thu May 22 13:52:49 2014 +0200
tree dec0362fc826eb6c759a3aca809cca1244336743
parent 4d8db4ab10e24b66428ab6ae096a4f6677de470a

Enforce alignment even if buffer is not aligned

library/memory_buffer_alloc.c

diff --git a/library/memory_buffer_alloc.c b/library/memory_buffer_alloc.c
index caeaa46..7dfeda9 100644
--- a/library/memory_buffer_alloc.c
+++ b/library/memory_buffer_alloc.c
@@ -555,6 +555,13 @@
     platform_set_malloc_free( buffer_alloc_malloc, buffer_alloc_free );
 #endif
 
+    if( (size_t) buf % POLARSSL_MEMORY_ALIGN_MULTIPLE )
+    {
+        buf += POLARSSL_MEMORY_ALIGN_MULTIPLE
+             - (size_t) buf % POLARSSL_MEMORY_ALIGN_MULTIPLE;
+        len -= (size_t) buf % POLARSSL_MEMORY_ALIGN_MULTIPLE;
+    }
+
     heap.buf = buf;
     heap.len = len;