Diagnose more cases of initializing distinct members of an anonymous union

member.  Use a better diagnostic for this case.  Also fix a bug with nested
anonymous structs/unions for -Wreorder;  this last was PR6575.

llvm-svn: 100923

1 files changed, 23 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/class-base-member-init.cpp b/clang/test/SemaCXX/class-base-member-init.cpp
index 7095d92d685..ca9f0454163 100644
--- a/clang/test/SemaCXX/class-base-member-init.cpp
+++ b/clang/test/SemaCXX/class-base-member-init.cpp
@@ -51,3 +51,26 @@ namespace Test3 {
       t(2) { } // expected-error {{multiple initializations given for non-static member 't'}}
   };
 }
+
+namespace test4 {
+  class A {
+    union {
+      struct {
+        int a;
+        int b;
+      };
+
+      int c;
+
+      union {
+        int d;
+        int e;
+      };
+    };
+
+    A(char _) : a(0), b(0) {}
+    A(short _) : a(0), c(0) {} // expected-error {{initializing multiple members of anonymous union}} expected-note {{previous initialization is here}}
+    A(int _) : d(0), e(0) {} // expected-error {{initializing multiple members of anonymous union}} expected-note {{previous initialization is here}}
+    A(long _) : a(0), d(0) {} // expected-error {{initializing multiple members of anonymous union}} expected-note {{previous initialization is here}}
+  };
+}