| Issue |
144952
|
| Summary |
False positive Wreturn-type warning when a function either returns or throws
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
TiborGY
|
Clang does not appear to be able to deduce that a function that always throws is effectively [[noreturn]], not even in seemingly trivial cases. Consider this:
```
void throwError(const std::string& msg){
throw std::runtime_error(msg);
}
int ensureZero(const int i){
if (i == 0) return 0;
throwError("ERROR");
}
```
Compiling with `-Wall -Wextra -O3 -std=c++2c` yields a false positive warning:
`warning: non-void function does not return a value in all control paths [-Wreturn-type]`
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