while (1)
{
- int dec = decode64_table[*p];
+ int dec = decode64_table[(unsigned char)*p];
if (dec == -1) break;
p++;
switch (mode)
break;
case 2: // 4n+2 base64 characters processed: require '=='
- if (left || p[0] != '=' || p[1] != '=' || decode64_table[p[2]] != -1)
+ if (left || p[0] != '=' || p[1] != '=' || decode64_table[(unsigned char)p[2]] != -1)
*pfInvalid = true;
break;
case 3: // 4n+3 base64 characters processed: require '='
- if (left || p[0] != '=' || decode64_table[p[1]] != -1)
+ if (left || p[0] != '=' || decode64_table[(unsigned char)p[1]] != -1)
*pfInvalid = true;
break;
}