objective-c numeric literal: type of boolean is

that of typedef BOOL if found.
// rdar://11231426

llvm-svn: 154595

clang/lib/Sema/SemaExpr.cpp

@@ -11259,6 +11259,18 @@ ExprResult
 Sema::ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind) {
   assert((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) &&
          "Unknown Objective-C Boolean value!");
+  QualType ObjCBoolLiteralQT = Context.ObjCBuiltinBoolTy;
+  // signed char is the default type for boolean literals. Use 'BOOL'
+  // instead, if BOOL typedef is visible in its scope instead.
+  Decl *TD = 
+    LookupSingleName(TUScope, &Context.Idents.get("BOOL"), 
+                     SourceLocation(), LookupOrdinaryName);
+  if (TypeDecl *BoolTD = dyn_cast_or_null<TypeDecl>(TD)) {
+    QualType QT = QualType(BoolTD->getTypeForDecl(), 0);
+    if (!QT.isNull())
+      ObjCBoolLiteralQT = QT;
+  }
+  
   return Owned(new (Context) ObjCBoolLiteralExpr(Kind == tok::kw___objc_yes,
-                                        Context.ObjCBuiltinBoolTy, OpLoc));
+                                        ObjCBoolLiteralQT, OpLoc));
 }

clang/test/Rewriter/objc-bool-literal-modern-1.mm

@@ -0,0 +1,31 @@
+// RUN: %clang_cc1 -x objective-c++ -fblocks -fms-extensions -rewrite-objc %s -o %t-rw.cpp 
+// RUN: %clang_cc1 -fsyntax-only -Wno-address-of-temporary -D"__declspec(X)=" %t-rw.cpp
+// rdar://11231426
+
+typedef bool BOOL;
+
+BOOL yes() {
+  return __objc_yes;
+}
+
+BOOL no() {
+  return __objc_no;
+}
+
+BOOL which (int flag) {
+  return flag ? yes() : no();
+}
+
+int main() {
+  which (__objc_yes);
+  which (__objc_no);
+  return __objc_yes;
+}
+
+void y(BOOL (^foo)());
+
+void x() {
+    y(^{
+        return __objc_yes;
+    });
+}

clang/test/SemaObjCXX/literals.mm

@@ -1,6 +1,15 @@
 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++0x -fblocks %s
 
-typedef unsigned char BOOL;
+// rdar://11231426
+typedef bool BOOL;
+
+void y(BOOL (^foo)());
+
+void x() {
+    y(^{
+        return __objc_yes;
+    });
+}
 
 @protocol NSCopying
 - copy;