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I am wondering why void() is a prvalue of void but void{} does not exist...? See the following answer: https://stackoverflow.com/a/37708167/293195
For example in the context:
template<typename R>
R foo(){
return R{};
}
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void (C++) If a pointer's type is void* , the pointer can point to any variable that's not declared with the const or volatile keyword. A void* pointer can't be dereferenced unless it's cast to another type. A void* pointer can be converted into any other type of data pointer.
Initializing a variable without a specified type with a function that doesn't return will infer the variable type to be void .
CWG 2351, resolved in June, has made void{} legal.
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