objective-c rewrite: Fixes rewriting of objective-c collection

statement inside a block. // rdar://9878420


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136717 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Rewrite/RewriteObjC.cpp

@@ -5577,12 +5577,20 @@ Stmt *RewriteObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
     CurrentBody = BE->getBody();
     CollectPropertySetters(CurrentBody);
     PropParentMap = 0;
+    // block literal on rhs of a property-dot-sytax assignment
+    // must be replaced by its synthesize ast so getRewrittenText
+    // works as expected. In this case, what actually ends up on RHS
+    // is the blockTranscribed which is the helper function for the
+    // block literal; as in: self.c = ^() {[ace ARR];};
+    bool saveDisableReplaceStmt = DisableReplaceStmt;
+    DisableReplaceStmt = false;
     RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
+    DisableReplaceStmt = saveDisableReplaceStmt;
     CurrentBody = SaveCurrentBody;
     PropParentMap = 0;
     ImportedLocalExternalDecls.clear();
     // Now we snarf the rewritten text and stash it away for later use.
-    std::string Str = Rewrite.ConvertToString(BE->getBody());
+    std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
     RewrittenBlockExprs[BE] = Str;
 
     Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs);

test/Rewriter/rewrite-foreach-in-block.mm

@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -x objective-c++ -Wno-return-type -fblocks -fms-extensions -rewrite-objc %s -o %t-rw.cpp
+// RUN: %clang_cc1 -fsyntax-only -Wno-address-of-temporary -D"id=void*" -D"SEL=void*" -D"__declspec(X)=" %t-rw.cpp
+// rdar:// 9878420
+
+void objc_enumerationMutation(id);
+void *sel_registerName(const char *);
+typedef void (^CoreDAVCompletionBlock)(void);
+
+@interface I
+- (void)M;
+- (id) ARR;
+@property (readwrite, copy, nonatomic) CoreDAVCompletionBlock c;
+@end
+
+@implementation I
+- (void)M {
+    I* ace;
+    self.c = ^() {
+          // sanity test for the changes.
+	  [ace ARR];
+          for (I *privilege in [ace ARR]) { }
+    };
+    self.c = ^() {
+          // sanity test for the changes.
+	  [ace ARR];
+    };
+}
+@end