Implement rdar://6138816 - [sema] named bitfields cannot have 0 width


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60920 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/bitfield.c b/test/Sema/bitfield.c
index 8d060c5..f3b285b 100644
--- a/test/Sema/bitfield.c
+++ b/test/Sema/bitfield.c
@@ -8,4 +8,7 @@
 
   int c : (1 + 0.25); // expected-error{{expression is not an integer constant expression}}
   int d : (int)(1 + 0.25); 
+
+  // rdar://6138816
+  int e : 0;  // expected-error {{bit-field 'e' has zero width}}
 };