Add a missing test file for recovery expressions.

The test was missed in 8222107aa9.

clang/test/SemaCXX/recovery-expr-type.cpp

@@ -0,0 +1,64 @@
+// RUN: %clang_cc1 -triple=x86_64-unknown-unknown -frecovery-ast -frecovery-ast-type -o - %s -fsyntax-only -verify
+
+namespace test0 {
+struct Indestructible {
+  // Indestructible();
+  ~Indestructible() = delete; // expected-note 2{{deleted}}
+};
+Indestructible make_indestructible();
+
+void test() {
+  // no crash.
+  int s = sizeof(make_indestructible()); // expected-error {{deleted}}
+  constexpr int ss = sizeof(make_indestructible()); // expected-error {{deleted}}
+  static_assert(ss, "");
+  int array[ss];
+}
+}
+
+namespace test1 {
+constexpr int foo() { return 1; } // expected-note {{candidate function not viable}}
+// verify the "not an integral constant expression" diagnostic is suppressed.
+static_assert(1 == foo(1), ""); // expected-error {{no matching function}}
+}
+
+namespace test2 {
+void foo(); // expected-note 3{{requires 0 arguments}}
+void func() {
+  // verify that "field has incomplete type" diagnostic is suppressed.
+  typeof(foo(42)) var; // expected-error {{no matching function}}
+
+  // FIXME: suppress the "cannot initialize a variable" diagnostic.
+  int a = foo(1); // expected-error {{no matching function}} \
+                  // expected-error {{cannot initialize a variable of type}}
+
+  // FIXME: suppress the "invalid application" diagnostic.
+  int s = sizeof(foo(42)); // expected-error {{no matching function}} \
+                           // expected-error {{invalid application of 'sizeof'}}
+};
+}
+
+namespace test3 {
+template <int N>
+constexpr int templated() __attribute__((enable_if(N, ""))) { // expected-note {{candidate disabled}}
+  return 1;
+}
+// verify that "constexpr variable must be initialized" diagnostic is suppressed.
+constexpr int A = templated<0>(); // expected-error{{no matching function}}
+
+template <typename T>
+struct AA {
+  template <typename U>
+  static constexpr int getB() { // expected-note{{candidate template ignored}}
+    return 2;
+  }
+  static constexpr int foo2() {
+    return AA<T>::getB(); // expected-error{{no matching function for call to 'getB'}} \
+                          // expected-note {{subexpression not valid in a constant expression}}
+  }
+};
+// FIXME: should we suppress the "be initialized by a constant expression" diagnostic?
+constexpr auto x2 = AA<int>::foo2(); // expected-error {{be initialized by a constant expression}} \
+                                     // expected-note {{in instantiation of member function}} \
+                                     // expected-note {{in call to}}
+}