The following code compiles fine on msvc and clang 17+ but does not on compile on gcc 14 or clang <= 16. However, it compiles as soon as I move the inner struct out to global scope.

#include <tuple>

template<typename ...Ts> struct myTemplate
{
    using MyTuple = std::tuple<Ts...>;
    
    myTemplate() = default;

    MyTuple tupleMember;
};

struct myOuterStruct
{
    struct myInnerStruct
    {
        int someMember=0;
    };

    myTemplate<myInnerStruct> someMember;
};


myOuterStruct someVariable;

The error is that there is no default constructor for the tuple, even though the inner struct is default constructible indeed.

<source>:23:15: error: call to implicitly-deleted default constructor of 'myOuterStruct'
myOuterStruct someVariable;
              ^
<source>:19:31: note: default constructor of 'myOuterStruct' is implicitly deleted because field 'someMember' has a deleted default constructor
    myTemplate<myInnerStruct> someMember;
                              ^
<source>:7:5: note: explicitly defaulted function was implicitly deleted here
    myTemplate() = default;
    ^
<source>:9:13: note: default constructor of 'myTemplate<myOuterStruct::myInnerStruct>' is implicitly deleted because field 'tupleMember' has no default constructor
    MyTuple tupleMember;

Anyone could shed some light into this?

I prepared it in godbolt here: https://godbolt.org/z/b5b4Y43q7

Thanks in advance!