Index: cfe/trunk/lib/Format/TokenAnnotator.cpp
===================================================================
--- cfe/trunk/lib/Format/TokenAnnotator.cpp
+++ cfe/trunk/lib/Format/TokenAnnotator.cpp
@@ -2349,6 +2349,9 @@
     if (Right.is(tok::l_paren) && Line.MustBeDeclaration &&
         Left.Tok.getIdentifierInfo())
       return false;
+    if (Right.is(tok::l_paren) &&
+        Left.isOneOf(tok::kw_throw, Keywords.kw_await, tok::kw_void))
+      return true;
     if ((Left.isOneOf(Keywords.kw_let, Keywords.kw_var, Keywords.kw_in,
                       tok::kw_const) ||
          // "of" is only a keyword if it appears after another identifier
Index: cfe/trunk/unittests/Format/FormatTestJS.cpp
===================================================================
--- cfe/trunk/unittests/Format/FormatTestJS.cpp
+++ cfe/trunk/unittests/Format/FormatTestJS.cpp
@@ -259,6 +259,15 @@
       "}\n");
 }
 
+TEST_F(FormatTestJS, ReservedWordsParenthesized) {
+  // All of these are statements using the keyword, not function calls.
+  verifyFormat("throw (x + y);\n"
+               "await (await x).y;\n"
+               "void (0);\n"
+               "delete (x.y);\n"
+               "return (x);\n");
+}
+
 TEST_F(FormatTestJS, CppKeywords) {
   // Make sure we don't mess stuff up because of C++ keywords.
   verifyFormat("return operator && (aa);");