Avoid negations on unsigned values

2017-09-21 11:23:37 +02:00 · 2017-09-21 11:23:37 +02:00 · 4ce2856a5d
commit 4ce2856a5d
parent 7e06a6a991
1 changed files with 1 additions and 1 deletions
--- a/src/libsodium/sodium/utils.c
+++ b/src/libsodium/sodium/utils.c
@ -682,7 +682,7 @@ sodium_unpad(size_t *unpadded_buflen_p, const unsigned char *buf,
        is_barrier =
            (( (acc - 1U) & (pad_len - 1U) & ((c ^ 0x80) - 1U) ) >> 8) & 1U;
        acc |= c;
-        pad_len |= (i & - is_barrier);
+        pad_len |= i & (1U + ~is_barrier);
        valid |= (unsigned char) is_barrier;
    }
    *unpadded_buflen_p = padded_buflen - 1U - pad_len;