Add a new ObjCExceptions member variable to LangOptions. This controls whether Objective-C exceptions are enabled or not (they are by default).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126061 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/no-objc-exceptions.m b/test/SemaObjC/no-objc-exceptions.m
new file mode 100644
index 0000000..78419a2
--- /dev/null
+++ b/test/SemaObjC/no-objc-exceptions.m
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fno-objc-exceptions -fsyntax-only -verify %s
+
+void f() {
+  @throw @"Hello"; // expected-error {{cannot use '@throw' with Objective-C exceptions disabled}}
+}
+
+void g() {
+  @try { // expected-error {{cannot use '@try' with Objective-C exceptions disabled}}
+    f();
+  } @finally {
+    
+  }
+}