https://bugs.llvm.org/show_bug.cgi?id=51560
Bug ID: 51560
Summary: Defaulted consteval default constructor that performs
no initialization is not rejected
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Keywords: accepts-invalid
Severity: enhancement
Priority: P
Component: C++2a
Assignee: unassignedclangb...@nondot.org
Reporter: johel...@gmail.com
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
johel...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
See https://godbolt.org/z/Gc4MTfdr7.
```C++
struct X{
int i;
consteval X() = default;
// consteval X() {}
};
int main () {
auto x = X();
(void)x;
}
```
See also https://eel.is/c++draft/class.default.ctor#4, particularly
https://eel.is/c++draft/class.default.ctor#4.sentence-3:
> If that user-written default constructor would be ill-formed, the program is
> ill-formed.
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