Add a missing 'break' to ensure that we reject inline assembly

constraints we don't recognize.

llvm-svn: 162064

clang/lib/Basic/Targets.cpp

@@ -3085,7 +3085,7 @@ public:
                                      TargetInfo::ConstraintInfo &Info) const {
     // FIXME: Check if this is complete
     switch (*Name) {
-    default:
+    default: break;
     case 'l': // r0-r7
     case 'h': // r8-r15
     case 'w': // VFP Floating point register single precision

clang/test/Sema/arm-asm.c

@@ -0,0 +1,7 @@
+// RUN: %clang_cc1 %s -triple armv7-apple-darwin -verify -fsyntax-only
+
+void f (void) {
+  int Val;
+  asm volatile ("lw (r1), %0[val]": "=&b"(Val)); // expected-error {{invalid output constraint '=&b' in asm}}
+  return;
+}