X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=utils%2Faligned_malloc.c;h=b345ad1e586c209556c6e4fb6f8eba82c076d19f;hb=4361b69d3178d7fc98d0388f9a223af6c2651aba;hp=4db92a41813bc3a969daa5ea31e6909deded1876;hpb=8afc01a67be4fbf3f1cc0fce9adf01b5289a21c6;p=xscreensaver

diff --git a/utils/aligned_malloc.c b/utils/aligned_malloc.c
index 4db92a41..b345ad1e 100644
--- a/utils/aligned_malloc.c
+++ b/utils/aligned_malloc.c
@@ -18,11 +18,13 @@ implied warranty.
 #include <stddef.h>
 #include <stdlib.h>
 
-#if !(_POSIX_VERSION >= 200112L || _XOPEN_VERSION >= 600)
-
 #include <assert.h>
 #include <errno.h>
 
+/* aligned_alloc() (C11) or posix_memalign() (POSIX) are other possibilities
+   for aligned_malloc().
+ */
+
 int aligned_malloc(void **ptr, unsigned alignment, size_t size)
 {
 	void *block_start;
@@ -41,7 +43,6 @@ int aligned_malloc(void **ptr, unsigned alignment, size_t size)
 
 void aligned_free(void *ptr)
 {
-	free(((void **)(ptr))[-1]);
+	if(ptr)
+		free(((void **)(ptr))[-1]);
 }
-
-#endif