Index: cfe/trunk/lib/Format/UnwrappedLineParser.cpp
===================================================================
--- cfe/trunk/lib/Format/UnwrappedLineParser.cpp
+++ cfe/trunk/lib/Format/UnwrappedLineParser.cpp
@@ -853,7 +853,8 @@
        Previous->isOneOf(tok::r_square, tok::r_paren, tok::plusplus,
                          tok::minusminus)))
     return addUnwrappedLine();
-  if (PreviousMustBeValue && isJSDeclOrStmt(Keywords, Next))
+  if ((PreviousMustBeValue || Previous->is(tok::r_paren)) &&
+      isJSDeclOrStmt(Keywords, Next))
     return addUnwrappedLine();
 }
 
Index: cfe/trunk/unittests/Format/FormatTestJS.cpp
===================================================================
--- cfe/trunk/unittests/Format/FormatTestJS.cpp
+++ cfe/trunk/unittests/Format/FormatTestJS.cpp
@@ -1106,6 +1106,10 @@
                "  readonly ratherLongField = 1;\n"
                "}",
                getGoogleJSStyleWithColumns(20));
+  verifyFormat("const x = (5 + 9)\n"
+               "const y = 3\n",
+               "const x = (   5 +    9)\n"
+               "const y = 3\n");
 }
 
 TEST_F(FormatTestJS, AutomaticSemicolonInsertionHeuristic) {