extern "C" should preserve the 'extern' qualifier for VarDecls. Fixes 6853728.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71957 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/extern-c.cpp b/test/CodeGenCXX/extern-c.cpp
new file mode 100644
index 0000000..6353293
--- /dev/null
+++ b/test/CodeGenCXX/extern-c.cpp
@@ -0,0 +1,13 @@
+// RUN: clang-cc -emit-llvm %s -o %t &&
+namespace foo {
+
+// RUN: not grep "@a = global i32" %t &&
+extern "C" int a;
+
+// RUN: not grep "@_ZN3foo1bE = global i32" %t &&
+extern int b;
+
+// RUN: grep "@_ZN3foo1cE = global i32" %t | count 1
+int c = 5;
+
+}