Shift right on unsigned char limits the value to 0..63 which is within
bounds for base64_table[]. Anyway, some static analyzers do not seem to
understand that. See if an otherwise unnecessary masking gets rid of
false warnings. (CID 62858)
Signed-off-by: Jouni Malinen <j@w1.fi>
pos = out;
line_len = 0;
while (end - in >= 3) {
- *pos++ = base64_table[in[0] >> 2];
- *pos++ = base64_table[((in[0] & 0x03) << 4) | (in[1] >> 4)];
- *pos++ = base64_table[((in[1] & 0x0f) << 2) | (in[2] >> 6)];
+ *pos++ = base64_table[(in[0] >> 2) & 0x3f];
+ *pos++ = base64_table[(((in[0] & 0x03) << 4) |
+ (in[1] >> 4)) & 0x3f];
+ *pos++ = base64_table[(((in[1] & 0x0f) << 2) |
+ (in[2] >> 6)) & 0x3f];
*pos++ = base64_table[in[2] & 0x3f];
in += 3;
line_len += 4;