Struct literals limitation

[Atila Neves]

On Monday, 16 November 2020 at 10:22:49 UTC, Jack Applegame wrote:
>
> Valid C++14:
>> auto foo() {
>>     struct Foo {
>>         int a, b;
>>     };
>>     return Foo({
>>         .a = 10,
>>         .b = 20
>>     });
>> }

Nope:

/tmp % clang++ -c -std=c++14 -pedantic cpp.cpp                    
                                                                   
             1 :(
cpp.cpp:6:13: warning: designated initializers are a C++20 
extension [-Wc++20-designator]
             .a = 10,
             ^
1 warning generated.