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Fix mask alignment 

Fix incorrect computation of buffer alignment in maskBytes. With this
change, all word operations on the buffer are aligned on word
boundaries.
This commit is contained in:
Gary Burd 2016-11-02 09:16:35 -07:00
parent 2aff870ef8
commit 343fff4c5c
1 changed files with 1 additions and 1 deletions
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2
mask.go
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@ -28,7 +28,7 @@ func maskBytes(key [4]byte, pos int, b []byte) int {
} }
// Mask one byte at a time to word boundary. // Mask one byte at a time to word boundary.
if n := int(uintptr(unsafe.Pointer(&b))) % wordSize; n != 0 { if n := int(uintptr(unsafe.Pointer(&b[0]))) % wordSize; n != 0 {
n = wordSize - n n = wordSize - n
for i := range b[:n] { for i := range b[:n] {
b[i] ^= key[pos&3] b[i] ^= key[pos&3]