YutongZhuu wrote:
> > unsigned int foo(unsigned char x)
> > {
> > return ~(1<<x); // warning: implicit conversion loses integer precision:
> > 'int' to 'unsigned int'
> > }
>
> Could you help me understand why clang is emitting the warning?
>
> Isn't it semantically equivalent to the following code?
>
> ```
> unsigned int foo(unsigned char x)
> {
> int i = ~(1<<x); // no -Wimplicit-int-conversion warning.
> return i; // no -Wimplicit-int-conversion warning.
> }
> ```
The conversion isn't implicit in the latter case.
https://github.com/llvm/llvm-project/pull/126846
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