[BUG] Missing _template-head_ in static data member definition

[JohelEGP]

Title: Missing template-head in static data member definition.

Minimal reproducer (https://cpp2.godbolt.org/z/M6fr97sTY):

t: @struct <T: type> type = {
  v: int == 0;
}
main: () = { }

Commands:

cppfront main.cpp2
clang++17 -std=c++23 -stdlib=libc++ -lc++abi -pedantic-errors -Wall -Wextra -Wconversion -Werror=unused-result -I . main.cpp

Expected result:

template<typename T>
  inline constexpr int t::v = 0;

Actual result and error:

  inline constexpr int t::v = 0;

Cpp2 lowered to Cpp1:

//=== Cpp2 type declarations ====================================================


#include "cpp2util.h"

template<typename T> class t;
  

//=== Cpp2 type definitions and function declarations ===========================

template<typename T> class t {
  public: static const int v;
};
auto main() -> int;


//=== Cpp2 function definitions =================================================


  inline constexpr int t::v = 0;

auto main() -> int{}

Output:

main.cpp2:2:24: error: use of class template 't' requires template arguments
    2 |   inline constexpr int t::v = 0;
      |                        ^
build/main.cpp:13:28: note: template is declared here
   13 | template<typename T> class t {
      | ~~~~~~~~~~~~~~~~~~~~       ^
1 error generated.

[JohelEGP]

On main, these are the new results (https://cpp2.godbolt.org/z/s31xsTj18).

Actual result and error:

  template<typename T> inline CPP2_CONSTEXPR int<T> t<T>::v = 0;

Output:

main.cpp2:2:49: error: expected unqualified-id
    2 |   template<typename T> inline CPP2_CONSTEXPR int<T> t<T>::v = 0;
      |                                                 ^
1 error generated.