out-of-line definition of constrained members is not accepted (new failing example of closed bug)

[xaxazak]

currently closed bug here (maybe reopen that and close this one)

namespace moo
	{
		template <typename T>
		constexpr bool baa = true;
		
		template <typename T> requires baa<T>
		void caw();
	}

template <typename T> requires moo::baa<T>
void moo::caw() {}

compiler-explorer

(using -std=c++26)
clang (trunk): error: out-of-line definition of 'caw' does not match any declaration in namespace 'moo'
gcc: compiles successfully

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (xaxazak)

[currently closed bug here](https://github.com//issues/49620) (maybe reopen that and close this one)

namespace moo
	{
		template <typename T>
		constexpr bool baa = true;
		
		template <typename T> requires baa<T>
		void caw();
	}

template <typename T> requires moo::baa<T>
void moo::caw() {}

compiler-explorer

(using -std=c++26)
clang (trunk): error: out-of-line definition of 'caw' does not match any declaration in namespace 'moo'
gcc: compiles successfully

[cor3ntin]

@zyn0217