I’m trying to determine if two structs are layout-compatible. In my case, it’s not clear to me if pointers of different types are considered compatible. In the following example, are structs t1 and t2 layout-compatible?

I wrote the following program that compiles with msvc but rejected by clang and gcc. It uses explicit object member function. Demo.

Considering the code below, in the Bar class, member needs to be constructed with the constant 33. The way to go is using an initializer list like in the #if 1 version.

Does s conversion specifier specify direction / order in which characters are written?

Let’s say int Arr[2];. Is &Arr[2] undefined in C++? This is attempting to get the past-the-end pointer to the hypothetical 3rd element, (Arr + 2) or std::end(Arr).

is the following code undefined

is the following code undefined

Under the “Callable” page at cppreference it states:

Under the “Callable” page at cppreference it states:

TL;DR: see compilers disagree on code by Godbolt link: https://godbolt.org/z/f7G6PTEsh