| Issue |
177084
|
| Summary |
Atomic scalar types should be able to be initialized with braces
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Halalaluyafail3
|
The following program demonstrates the issue:
```c
int main(){
(_Atomic int){};
}
```
Clang appears to reject initializing an atomic with a single _expression_ enclosed in braces or a C23 empty initializer. I don't see any wording that would make this invalid, and it would be very inconvenient for this to be invalid since `{}` and `{0}` are supposed to be initializers that can initialize any complete object. However, there is one scenario where Clang does allow using a C23 empty initializer with an atomic type:
```c
_Atomic int x;
int main(){}
```
This is a tentative definition, and because there are no external definitions it is as if there was a definition at the end with the composite type and an empty initializer.
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