1 files changed, 72 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/decl-expr-ambiguity.cpp b/clang/test/SemaCXX/decl-expr-ambiguity.cpp
new file mode 100644
index 0000000..6f4d08c
--- /dev/null
+++ b/clang/test/SemaCXX/decl-expr-ambiguity.cpp
@@ -0,0 +1,72 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic-errors %s
+
+void f() {
+  int a;
+  struct S { int m; };
+  typedef S *T;
+
+  // Expressions.
+  T(a)->m = 7;
+  int(a)++; // expected-error {{assignment to cast is illegal}}
+  __extension__ int(a)++; // expected-error {{assignment to cast is illegal}}
+  __typeof(int)(a,5)<<a; // expected-error {{excess elements in scalar initializer}}
+  void(a), ++a;
+  if (int(a)+1) {}
+  for (int(a)+1;;) {} // expected-warning {{expression result unused}}
+  a = sizeof(int()+1);
+  a = sizeof(int(1));
+  typeof(int()+1) a2; // expected-error {{extension used}}
+  (int(1)); // expected-warning {{expression result unused}}
+
+  // type-id
+  (int())1; // expected-error {{C-style cast from 'int' to 'int ()' is not allowed}}
+
+  // Declarations.
+  int fd(T(a)); // expected-warning {{parentheses were disambiguated as a function declarator}}
+  T(*d)(int(p)); // expected-warning {{parentheses were disambiguated as a function declarator}} expected-note {{previous definition is here}}
+  typedef T(*td)(int(p));
+  extern T(*tp)(int(p));
+  T d3(); // expected-warning {{empty parentheses interpreted as a function declaration}} expected-note {{replace parentheses with an initializer}}
+  T d3v(void);
+  typedef T d3t();
+  extern T f3();
+  __typeof(*T()) f4(); // expected-warning {{empty parentheses interpreted as a function declaration}} expected-note {{replace parentheses with an initializer}}
+  typedef void *V;
+  __typeof(*V()) f5();
+  T multi1,
+    multi2(); // expected-warning {{empty parentheses interpreted as a function declaration}} expected-note {{replace parentheses with an initializer}}
+  T(d)[5]; // expected-error {{redefinition of 'd'}}
+  typeof(int[])(f) = { 1, 2 }; // expected-error {{extension used}}
+  void(b)(int);
+  int(d2) __attribute__(());
+  if (int(a)=1) {}
+  int(d3(int()));
+}
+
+struct RAII {
+  RAII();
+  ~RAII();
+};
+
+void func();
+namespace N {
+  struct S;
+
+  void emptyParens() {
+    RAII raii(); // expected-warning {{function declaration}} expected-note {{remove parentheses to declare a variable}}
+    int a, b, c, d, e, // expected-note {{change this ',' to a ';' to call 'func'}}
+    func(); // expected-warning {{function declaration}} expected-note {{replace parentheses with an initializer}}
+
+    S s(); // expected-warning {{function declaration}}
+  }
+}
+
+class C { };
+void fn(int(C)) { } // void fn(int(*fp)(C c)) { } expected-note{{candidate function}}
+                    // not: void fn(int C);
+int g(C);
+
+void foo() {
+  fn(1); // expected-error {{no matching function}}
+  fn(g); // OK
+}