GetCRC32: Fix the hash for the last byte(s)

This fixes issue 8227 https://code.google.com/p/dolphin-emu/issues/detail?id=8227
2015-02-17 22:34:45 +01:00 · 2015-02-17 22:34:45 +01:00 · f6c9b8243e
parent 127e742992
commit f6c9b8243e
1 changed files with 7 additions and 2 deletions
--- a/Source/Core/Common/Hash.cpp
+++ b/Source/Core/Common/Hash.cpp
@ -252,9 +252,14 @@ u64 GetCRC32(const u8 *src, u32 len, u32 samples)
 	if (data < end - Step * 2)
 		h[2] = _mm_crc32_u64(h[2], data[Step * 2]);

-	const u8 *data2 = (const u8*)end;
+	if (len & 7)
+	{
+		u64 temp = 0;
+		memcpy(&temp, end, len & 7);
+		h[0] = _mm_crc32_u64(h[0], temp);
+	}
+
 	// FIXME: is there a better way to combine these partial hashes?
-	h[0] = _mm_crc32_u64(h[0], u64(data2[0]));
 	return h[0] + (h[1] << 10) + (h[2] << 21) + (h[3] << 32);
 #else
 	return 0;