1 files changed, 58 insertions, 0 deletions
diff --git a/test/SemaCXX/extern-c.cpp b/test/SemaCXX/extern-c.cpp
new file mode 100644
index 0000000..c55b10d
--- /dev/null
+++ b/test/SemaCXX/extern-c.cpp
@@ -0,0 +1,58 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+namespace test1 {
+  extern "C" {
+    void f() {
+      void test1_g(int); // expected-note {{previous declaration is here}}
+    }
+  }
+}
+int test1_g(int); // expected-error {{functions that differ only in their return type cannot be overloaded}}
+
+namespace test2 {
+  extern "C" {
+    void f() {
+      extern int test2_x; // expected-note {{previous definition is here}}
+    }
+  }
+}
+float test2_x; // expected-error {{redefinition of 'test2_x' with a different type: 'float' vs 'int'}}
+
+namespace test3 {
+  extern "C" {
+    void f() {
+      extern int test3_b; // expected-note {{previous definition is here}}
+    }
+  }
+  extern "C" {
+    float test3_b; // expected-error {{redefinition of 'test3_b' with a different type: 'float' vs 'int'}}
+  }
+}
+
+extern "C" {
+  void test4_f() {
+    extern int test4_b; // expected-note {{previous definition is here}}
+  }
+}
+static float test4_b; // expected-error {{redefinition of 'test4_b' with a different type: 'float' vs 'int'}}
+
+extern "C" {
+  void test5_f() {
+    extern int test5_b; // expected-note {{previous definition is here}}
+  }
+}
+extern "C" {
+  static float test5_b; // expected-error {{redefinition of 'test5_b' with a different type: 'float' vs 'int'}}
+}
+
+extern "C" {
+  void f() {
+    extern int test6_b;
+  }
+}
+namespace foo {
+  extern "C" {
+    static float test6_b;
+    extern float test6_b;
+  }
+}