From: Fariborz Jahanian <fjahanian@apple.com>
Date: Fri, 14 Mar 2014 15:40:54 +0000 (+0000)
Subject: Objective-C++ IRGen. Due to change to AST for initialization of c++11’s
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e385112444b7202cc7869825eb66efb6fed70940;p=clang

Objective-C++ IRGen. Due to change to AST for initialization of c++11’s
data members by addition of CXXDefaultInitExpr node to the initializer expression,
it has broken treatment of arc code for such initializations. Reviewed by John McCall.
// rdar://16299964


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@203935 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index d0380a025d..1f0dd8535a 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -571,7 +571,10 @@ void CodeGenFunction::EmitScalarInit(const Expr *init,
     EmitStoreThroughLValue(RValue::get(value), lvalue, true);
     return;
   }
-
+  
+  if (const CXXDefaultInitExpr *DIE = dyn_cast<CXXDefaultInitExpr>(init))
+    init = DIE->getExpr();
+    
   // If we're emitting a value with lifetime, we have to do the
   // initialization *before* we leave the cleanup scopes.
   if (const ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(init)) {
diff --git a/test/CodeGenObjCXX/arc-cxx11-member-init.mm b/test/CodeGenObjCXX/arc-cxx11-member-init.mm
new file mode 100644
index 0000000000..213e7a1b7b
--- /dev/null
+++ b/test/CodeGenObjCXX/arc-cxx11-member-init.mm
@@ -0,0 +1,32 @@
+// RUN: %clang_cc1  -triple x86_64-apple-darwin10 -fobjc-arc -std=c++11 -emit-llvm -o - %s | FileCheck %s
+// rdar://16299964
+  
+@interface NSObject
++ (id)new;
+@end
+
+@interface NSMutableDictionary : NSObject
+@end
+  
+class XClipboardDataSet
+{ 
+  NSMutableDictionary* mClipData = [NSMutableDictionary new];
+};
+  
+@interface AppDelegate @end
+
+@implementation AppDelegate
+- (void)applicationDidFinishLaunching
+{ 
+ XClipboardDataSet clip; 
+}
+@end
+
+// CHECK: [[mClipData:%.*]] = getelementptr inbounds %class.XClipboardDataSet* 
+// CHECK: [[ZERO:%.*]] = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_"
+// CHECK: [[ONE:%.*]] = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_"
+// CHECK: [[TWO:%.*]] = bitcast %struct._class_t* [[ZERO]] to i8*
+// CHECK: [[CALL:%.*]] = call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* [[TWO]], i8* [[ONE]])
+// CHECK: [[THREE:%.*]] = bitcast i8* [[CALL]] to [[T:%.*]]*
+// CHECK: store [[T]]* [[THREE]], [[T]]** [[mClipData]], align 8
+