Add diagnostics for bitfields.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60628 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/bitfield.c b/test/Sema/bitfield.c
new file mode 100644
index 0000000..9b0d6a1
--- /dev/null
+++ b/test/Sema/bitfield.c
@@ -0,0 +1,8 @@
+// RUN: clang %s -fsyntax-only -verify 
+
+struct a {
+  int a : -1; // expected-error{{bit-field 'a' has negative width}}
+  int b : 33; // expected-error{{size of bit-field 'b' exceeds size of its type (32 bits)}}
+  int c : (1 + 0.25); // expected-error{{expression is not an integer constant expression}}
+  int d : (int)(1 + 0.25); 
+};