X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Flzx-compress.c;h=b23c2df088642ce2d9001ebeba130d8fbba504d8;hb=3e7f9503cec2df67295fa878f5a6230ad3871160;hp=a811d51c9ec9ffd43a5064d853b89aca888b1cc8;hpb=92d96f9e2db42196a778b727cfa91d18a5cc6f49;p=wimlib

diff --git a/src/lzx-compress.c b/src/lzx-compress.c
index a811d51c..b23c2df0 100644
--- a/src/lzx-compress.c
+++ b/src/lzx-compress.c
@@ -567,7 +567,7 @@ lzx_write_compressed_tree(struct output_bitstream *out,
 
 /* Builds the canonical Huffman code for the main tree, the length tree, and the
  * aligned offset tree. */
-static void 
+static void
 lzx_make_huffman_codes(const struct lzx_freq_tables *freq_tabs,
 		       struct lzx_codes *codes)
 {
@@ -669,6 +669,7 @@ wimlib_lzx_compress(const void *__uncompressed_data, unsigned uncompressed_len,
 	/* The input data must be preprocessed. To avoid changing the original
 	 * input, copy it to a temporary buffer. */
 	memcpy(uncompressed_data, __uncompressed_data, uncompressed_len);
+	memset(uncompressed_data + uncompressed_len, 0, 8);
 
 	/* Before doing any actual compression, do the call instruction (0xe8
 	 * byte) translation on the uncompressed data. */
@@ -746,21 +747,23 @@ wimlib_lzx_compress(const void *__uncompressed_data, unsigned uncompressed_len,
 
 #ifdef ENABLE_VERIFY_COMPRESSION
 	/* Verify that we really get the same thing back when decompressing. */
-	u8 buf[uncompressed_len];
-	ret = wimlib_lzx_decompress(compressed_data, compressed_len,
-				    buf, uncompressed_len);
-	if (ret != 0) {
-		ERROR("lzx_compress(): Failed to decompress data we compressed");
-		abort();
-	}
-
-	for (i = 0; i < uncompressed_len; i++) {
-		if (buf[i] != *((u8*)__uncompressed_data + i)) {
-			ERROR("lzx_compress(): Data we compressed didn't "
-			      "decompress to the original data (difference at "
-			      "byte %u of %u)", i + 1, uncompressed_len);
+	{
+		u8 buf[uncompressed_len];
+		ret = wimlib_lzx_decompress(compressed_data, compressed_len,
+					    buf, uncompressed_len);
+		if (ret != 0) {
+			ERROR("lzx_compress(): Failed to decompress data we compressed");
 			abort();
 		}
+
+		for (i = 0; i < uncompressed_len; i++) {
+			if (buf[i] != *((u8*)__uncompressed_data + i)) {
+				ERROR("lzx_compress(): Data we compressed didn't "
+				      "decompress to the original data (difference at "
+				      "byte %u of %u)", i + 1, uncompressed_len);
+				abort();
+			}
+		}
 	}
 #endif
 	return compressed_len;