C++ 20 Pointer Declaration[quote]When I run the code with Clang it works fine [/quote] Really? Still an error using clang 13....
C++ 20 Pointer Declaration[quote]I using GCC 11 Compiler C++ 20 standard. [/quote] Note that c++2a (which you had in your OP)...
C++ 20 Pointer Declarationmaybe the volatile and * need to be together.
C++ 20 Pointer DeclarationSo use one of the other two. g++ does complain about the placement of volatile in the third example...
Function Variable Persistence?https://en.cppreference.com/w/cpp/language/copy_elision See RVO and NRVO