size_t i = 0, j = 0;
for (size_t n = U.size() / 3 * 3; i < n; i += 3, j += 4) {
- uint32_t x = (U[i] << 16) | (U[i + 1] << 8) | U[i + 2];
+ uint32_t x = ((unsigned char)U[i] << 16) | ((unsigned char)U[i + 1] << 8) |
+ (unsigned char)U[i + 2];
Buffer[j + 0] = Table[(x >> 18) & 63];
Buffer[j + 1] = Table[(x >> 12) & 63];
Buffer[j + 2] = Table[(x >> 6) & 63];
Buffer[j + 3] = Table[x & 63];
}
if (i + 1 == U.size()) {
- uint32_t x = (U[i] << 16);
+ uint32_t x = ((unsigned char)U[i] << 16);
Buffer[j + 0] = Table[(x >> 18) & 63];
Buffer[j + 1] = Table[(x >> 12) & 63];
Buffer[j + 2] = '=';
Buffer[j + 3] = '=';
} else if (i + 2 == U.size()) {
- uint32_t x = (U[i] << 16) | (U[i + 1] << 8);
+ uint32_t x = ((unsigned char)U[i] << 16) | ((unsigned char)U[i + 1] << 8);
Buffer[j + 0] = Table[(x >> 18) & 63];
Buffer[j + 1] = Table[(x >> 12) & 63];
Buffer[j + 2] = Table[(x >> 6) & 63];