c - "Use of a signed integer operand with a binary bitwise operator" - when using unsigned short

Question

In the following C snippet that checks if the first two bits of a 16-bit sequence are set:

bool is_pointer(unsigned short int sequence) {
  return (sequence >> 14) == 3;
}

CLion's Clang-Tidy is giving me a "Use of a signed integer operand with a binary bitwise operator" warning, and I can't understand why. Is unsigned short not unsigned enough?

Answer 1

The code for this warning checks if either operand to the bitwise operator is signed. It is not sequence causing the warning, but 14, and you can alleviate the problem by making 14 unsigned by appending a u to the end.

(sequence >> 14u)

This warning is bad. As Roland's answer describes, CLion is fixing this.