Format strings: add more expression types that don't need parens to cast.

No functionality change (the test change is a comment only, and the new
functionality can't be tested using the current test).

llvm-svn: 169399

clang/lib/Sema/SemaChecking.cpp

@@ -2690,12 +2690,24 @@ static bool requiresParensToAddCast(const Expr *E) {
   switch (Inside->getStmtClass()) {
   case Stmt::ArraySubscriptExprClass:
   case Stmt::CallExprClass:
+  case Stmt::CharacterLiteralClass:
+  case Stmt::CXXBoolLiteralExprClass:
   case Stmt::DeclRefExprClass:
+  case Stmt::FloatingLiteralClass:
+  case Stmt::IntegerLiteralClass:
   case Stmt::MemberExprClass:
+  case Stmt::ObjCArrayLiteralClass:
+  case Stmt::ObjCBoolLiteralExprClass:
+  case Stmt::ObjCBoxedExprClass:
+  case Stmt::ObjCDictionaryLiteralClass:
+  case Stmt::ObjCEncodeExprClass:
   case Stmt::ObjCIvarRefExprClass:
   case Stmt::ObjCMessageExprClass:
   case Stmt::ObjCPropertyRefExprClass:
+  case Stmt::ObjCStringLiteralClass:
+  case Stmt::ObjCSubscriptRefExprClass:
   case Stmt::ParenExprClass:
+  case Stmt::StringLiteralClass:
   case Stmt::UnaryOperatorClass:
     return false;
   default:

clang/test/FixIt/format-darwin.m

@@ -65,7 +65,7 @@ void testParens(Foo *obj, struct Bar *record) {
   NSInteger arr[4] = {0};
   NSInteger i = 0;
 
-  // These cases match the cases in CheckPrintfHandler::checkFormatExpr.
+  // These cases match the relevant cases in CheckPrintfHandler::checkFormatExpr.
   printf("%s", arr[0]);  // expected-warning{{values of type 'NSInteger' should not be used as format arguments; add an explicit cast to 'long' instead}}
   printf("%s", getNSInteger());  // expected-warning{{values of type 'NSInteger' should not be used as format arguments; add an explicit cast to 'long' instead}}
   printf("%s", i);  // expected-warning{{values of type 'NSInteger' should not be used as format arguments; add an explicit cast to 'long' instead}}