diff --git a/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
index 01c7afe520410..09306383d53f5 100644
--- a/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
@@ -1469,6 +1469,9 @@ void MallocChecker::checkPostObjCMessage(const ObjCMethodCall &Call,
     if (!*FreeWhenDone)
       return;
 
+  if (Call.hasNonZeroCallbackArg())
+    return;
+
   bool IsKnownToBeAllocatedMemory;
   ProgramStateRef State =
       FreeMemAux(C, Call.getArgExpr(0), Call.getOriginExpr(), C.getState(),
diff --git a/clang/test/Analysis/Inputs/system-header-simulator-objc.h b/clang/test/Analysis/Inputs/system-header-simulator-objc.h
index df751d03e642a..0dc6b369b0151 100644
--- a/clang/test/Analysis/Inputs/system-header-simulator-objc.h
+++ b/clang/test/Analysis/Inputs/system-header-simulator-objc.h
@@ -117,7 +117,10 @@ typedef double NSTimeInterval;
 + (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
 - (id)initWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
 - (id)initWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
-- (id)initWithBytes:(void *)bytes length:(NSUInteger) length;
+- (id)initWithBytesNoCopy:(void *)bytes
+                   length:(NSUInteger)length
+              deallocator:(void (^)(void *bytes, NSUInteger length))deallocator;
+- (id)initWithBytes:(void *)bytes length:(NSUInteger)length;
 @end
 
 typedef struct {
diff --git a/clang/test/Analysis/malloc.mm b/clang/test/Analysis/malloc.mm
index e84644b9dd732..1b7dd2756e1bb 100644
--- a/clang/test/Analysis/malloc.mm
+++ b/clang/test/Analysis/malloc.mm
@@ -1,4 +1,8 @@
-// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify -fblocks %s
+// RUN: %clang_analyze_cc1 -std=c++14 \
+// RUN:     -analyzer-checker=core,unix.Malloc,cplusplus.NewDelete \
+// RUN:     -analyzer-checker=unix.MismatchedDeallocator \
+// RUN:     -verify -fblocks %s
+
 #import "Inputs/system-header-simulator-objc.h"
 #import "Inputs/system-header-simulator-for-malloc.h"
 
@@ -61,6 +65,23 @@ void testNSStringFreeWhenDoneNO(NSUInteger dataLength) {
   NSString *nsstr = [[NSString alloc] initWithBytesNoCopy:data length:dataLength encoding:NSUTF8StringEncoding freeWhenDone:0]; // expected-warning{{leak}}
 }
 
+void testNSStringFreeWhenDoneNewDelete(NSUInteger dataLength) {
+  unsigned char *data = new unsigned char(42);
+  NSData *nsdata = [[NSData alloc] initWithBytesNoCopy:data
+                                   length:dataLength freeWhenDone:1];
+  // expected-warning@-2{{-initWithBytesNoCopy:length:freeWhenDone: cannot take ownership of memory allocated by 'new'}}
+}
+
+void testNSStringFreeWhenDoneNewDelete2(NSUInteger dataLength) {
+  unsigned char *data = new unsigned char(42);
+  NSData *nsdata = [[NSData alloc] initWithBytesNoCopy:data
+                                                length:dataLength
+                                           deallocator:^(void *bytes,
+                                                         NSUInteger length) {
+                                             delete (unsigned char *)bytes;
+                                           }]; // no-warning
+}
+
 void testNSStringFreeWhenDoneNO2(NSUInteger dataLength) {
   unichar *data = (unichar*)malloc(42);
   NSString *nsstr = [[NSString alloc] initWithCharactersNoCopy:data length:dataLength freeWhenDone:0]; // expected-warning{{leak}}