“将带符号整数操作数与二进制按位运算符一起使用” -使用无符号短型 [英] "Use of a signed integer operand with a binary bitwise operator" - when using unsigned short

问题描述

在下面的C代码片段中，该代码片段检查是否设置了16位序列的前两位：

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的Clang-Tidy给我使用带符号整数操作数二进制按位运算符警告，我不明白为什么。 unsigned short 是否不够签名？

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?

推荐答案

此检查的代码似乎注意是否对按位运算符的 操作数进行了签名。引起警告的原因不是顺序，而是 14 ，您可以通过使 14 通过在末尾附加 u 来取消签名。

The code for this check seems to care 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)

此警告是错误的。正如 Roland的答案所述，CLion正在解决此问题。

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

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