X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fresource.c;h=300aec8f1cbec29e0b919bba8243984e7e518271;hp=f7684b10baee9bab6fffaa109f0977e79a19d1ed;hb=869ca1f4cc4654501d52f8c3e660c056904ccabf;hpb=c5a50ca10987e37b7e880f71f342fd78270f27a0

diff --git a/src/resource.c b/src/resource.c
index f7684b10..300aec8f 100644
--- a/src/resource.c
+++ b/src/resource.c
@@ -138,6 +138,7 @@ read_compressed_wim_resource(const struct wim_resource_spec * const rspec,
 	int errno_save;
 
 	u64 *chunk_offsets = NULL;
+	u8 *_ubuf = NULL;
 	u8 *ubuf = NULL;
 	void *cbuf = NULL;
 	bool chunk_offsets_malloced = false;
@@ -368,13 +369,14 @@ read_compressed_wim_resource(const struct wim_resource_spec * const rspec,
 
 	/* Allocate buffer for holding the uncompressed data of each chunk.  */
 	if (chunk_size <= STACK_MAX) {
-		ubuf = alloca(chunk_size);
+		_ubuf = alloca(chunk_size + 15);
 	} else {
-		ubuf = MALLOC(chunk_size);
-		if (ubuf == NULL)
+		_ubuf = MALLOC(chunk_size + 15);
+		if (_ubuf == NULL)
 			goto oom;
 		ubuf_malloced = true;
 	}
+	ubuf = (u8 *)(((uintptr_t)_ubuf + 15) & ~15);
 
 	/* Allocate a temporary buffer for reading compressed chunks, each of
 	 * which can be at most @chunk_size - 1 bytes.  This excludes compressed
@@ -548,7 +550,7 @@ out_free_memory:
 	if (chunk_offsets_malloced)
 		FREE(chunk_offsets);
 	if (ubuf_malloced)
-		FREE(ubuf);
+		FREE(_ubuf);
 	if (cbuf_malloced)
 		FREE(cbuf);
 	errno = errno_save;