1 files changed, 59 insertions, 0 deletions
diff --git a/test/CXX/temp/temp.constr/temp.constr.decl/func-template-decl.cpp b/test/CXX/temp/temp.constr/temp.constr.decl/func-template-decl.cpp
new file mode 100644
index 0000000000..c83ab26059
--- /dev/null
+++ b/test/CXX/temp/temp.constr/temp.constr.decl/func-template-decl.cpp
@@ -0,0 +1,59 @@
+// RUN: %clang_cc1 -std=c++2a -x c++ -verify %s
+
+namespace nodiag {
+
+template <typename T> requires bool(T())
+int A();
+template <typename U> requires bool(U())
+int A();
+
+} // end namespace nodiag
+
+namespace diag {
+
+namespace orig {
+  template <typename T> requires true
+  int A();
+  template <typename T>
+  int B();
+  template <typename T> requires true
+  int C();
+}
+
+template <typename T>
+int orig::A();
+// expected-error@-1{{out-of-line declaration of 'A' does not match any declaration in namespace 'diag::orig'}}
+template <typename T> requires true
+int orig::B();
+// expected-error@-1{{out-of-line declaration of 'B' does not match any declaration in namespace 'diag::orig'}}
+template <typename T> requires !0
+int orig::C();
+// expected-error@-1{{out-of-line declaration of 'C' does not match any declaration in namespace 'diag::orig'}}
+
+} // end namespace diag
+
+namespace nodiag {
+
+struct AA {
+  template <typename T> requires someFunc(T())
+  int A();
+};
+
+template <typename T> requires someFunc(T())
+int AA::A() { return sizeof(T); }
+
+} // end namespace nodiag
+
+namespace diag {
+
+template <unsigned N>
+struct TA {
+  template <template <unsigned> class TT> requires TT<N>::happy
+  int A();
+};
+
+template <unsigned N>
+template <template <unsigned> class TT> int TA<N>::A() { return sizeof(TT<N>); }
+// expected-error@-1{{out-of-line definition of 'A' does not match any declaration in 'TA<N>'}}
+
+} // end namespace diag