| Issue |
104391
|
| Summary |
[clang][c23] macro + non-void cast incorrectly suppresses "nodiscard" warning
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
poconn
|
clang-18 compiles the following code warning-free at `-Weverything`, but should warn because the result of `f()` is essentially discarded (aside from the cast, but it would be to void if the result was supposed to be ignorable):
```c
[[nodiscard]] int f();
void g() {
#define M (unsigned int)f()
M;
}
```
https://godbolt.org/z/9sdcY3eof
It does correctly warn when compiling as C++ (even with the C-style cast).
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