Extended Description

Here's a test presented as a diff to test/CodeGenCXX/mangle-ms.cpp

the FIXME lines are the unsatisfied checks, NOW is how these variables are mangled today.

diff --git test/CodeGenCXX/mangle-ms.cpp test/CodeGenCXX/mangle-ms.cpp
index 8798a7d..8440d68 100644
--- test/CodeGenCXX/mangle-ms.cpp
+++ test/CodeGenCXX/mangle-ms.cpp
@@ -2,6 +2,11 @@

// CHECK: @"\01?a@@3Ha"
// CHECK: @"\01?b@N@@3Ha"
+// CHECK: @"\01?s1@N@@3PADA"
+// FIXME: @"\01?s2@N@@3QBDB"
+// NOW: @"\01?s2@N@@3PBDA"
+// FIXME: @"\01?s3@N@@3QBDB"
+// NOW: @"\01?s3@N@@3PBDA"
// CHECK: @​c
// CHECK: @"\01?d@foo@@0FB"
// CHECK: @"\01?e@foo@@1jc"
@@ -18,10 +23,17 @@

int a;

-namespace N { int b; }
+namespace N {

• int b;
• extern char s1[];
• extern const char s2[];
• extern const char s3[42];
  +}

static int c;
-int _c(void) {return c;}
+int _c(void) {

• return N::s1[0] + N::s2[0] + N::s3[0] + c;
  +}
  // CHECK: @"\01?_c@@yahxz"

class foo {