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C impl: Prevent memcpy undefined behavior

This commit is contained in:
Guido Vranken 2020-01-09 21:13:15 +01:00 committed by Jack O'Connor
parent 8d3f33802d
commit 253e830c26
1 changed files with 3 additions and 0 deletions
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c/blake3.c
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@ -34,6 +34,9 @@ INLINE size_t chunk_state_len(const blake3_chunk_state *self) {
INLINE size_t chunk_state_fill_buf(blake3_chunk_state *self,
const uint8_t *input, size_t input_len) {
if (input_len == 0) {
return 0;
}
size_t take = BLAKE3_BLOCK_LEN - ((size_t)self->buf_len);
if (take > input_len) {
take = input_len;