Index: include/clang/StaticAnalyzer/Core/BugReporter/BugType.h
===================================================================
--- include/clang/StaticAnalyzer/Core/BugReporter/BugType.h
+++ include/clang/StaticAnalyzer/Core/BugReporter/BugType.h
@@ -38,12 +38,14 @@
   virtual void anchor();
 
 public:
-  BugType(CheckName Check, StringRef Name, StringRef Cat)
+  BugType(CheckName Check, StringRef Name, StringRef Cat,
+          bool SuppressOnSink=false)
       : Check(Check), Name(Name), Category(Cat), Checker(nullptr),
-        SuppressOnSink(false) {}
-  BugType(const CheckerBase *Checker, StringRef Name, StringRef Cat)
+        SuppressOnSink(SuppressOnSink) {}
+  BugType(const CheckerBase *Checker, StringRef Name, StringRef Cat,
+          bool SuppressOnSink=false)
       : Check(Checker->getCheckName()), Name(Name), Category(Cat),
-        Checker(Checker), SuppressOnSink(false) {}
+        Checker(Checker), SuppressOnSink(SuppressOnSink) {}
   virtual ~BugType() = default;
 
   StringRef getName() const { return Name; }
@@ -64,7 +66,6 @@
   ///  type should be suppressed if the end node of the report is post-dominated
   ///  by a sink node.
   bool isSuppressOnSink() const { return SuppressOnSink; }
-  void setSuppressOnSink(bool x) { SuppressOnSink = x; }
 };
 
 class BuiltinBug : public BugType {
Index: lib/StaticAnalyzer/Checkers/IteratorChecker.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/IteratorChecker.cpp
+++ lib/StaticAnalyzer/Checkers/IteratorChecker.cpp
@@ -399,14 +399,14 @@
 
 IteratorChecker::IteratorChecker() {
   OutOfRangeBugType.reset(
-      new BugType(this, "Iterator out of range", "Misuse of STL APIs"));
-  OutOfRangeBugType->setSuppressOnSink(true);
+      new BugType(this, "Iterator out of range", "Misuse of STL APIs",
+                  /*SuppressOnSink=*/true));
   MismatchedBugType.reset(
-      new BugType(this, "Iterator(s) mismatched", "Misuse of STL APIs"));
-  MismatchedBugType->setSuppressOnSink(true);
+      new BugType(this, "Iterator(s) mismatched", "Misuse of STL APIs",
+                  /*SuppressOnSink=*/true));
   InvalidatedBugType.reset(
-      new BugType(this, "Iterator invalidated", "Misuse of STL APIs"));
-  InvalidatedBugType->setSuppressOnSink(true);
+      new BugType(this, "Iterator invalidated", "Misuse of STL APIs",
+                  /*SuppressOnSink=*/true));
 }
 
 void IteratorChecker::checkPreCall(const CallEvent &Call,
Index: lib/StaticAnalyzer/Checkers/MallocChecker.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ lib/StaticAnalyzer/Checkers/MallocChecker.cpp
@@ -2301,14 +2301,14 @@
 
   assert(N);
   if (!BT_Leak[*CheckKind]) {
-    BT_Leak[*CheckKind].reset(new BugType(CheckNames[*CheckKind], "Memory leak",
-                                          categories::MemoryError));
     // Leaks should not be reported if they are post-dominated by a sink:
     // (1) Sinks are higher importance bugs.
     // (2) NoReturnFunctionChecker uses sink nodes to represent paths ending
     //     with __noreturn functions such as assert() or exit(). We choose not
     //     to report leaks on such paths.
-    BT_Leak[*CheckKind]->setSuppressOnSink(true);
+    BT_Leak[*CheckKind].reset(new BugType(CheckNames[*CheckKind], "Memory leak",
+                                          categories::MemoryError,
+                                          /*SuppressOnSink=*/true));
   }
 
   // Most bug reports are cached at the location where they occurred.
Index: lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountChecker.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountChecker.cpp
+++ lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountChecker.cpp
@@ -92,10 +92,10 @@
 
 class Leak : public RefCountBug {
 public:
-  Leak(const CheckerBase *checker, StringRef name) : RefCountBug(checker, name) {
-    // Leaks should not be reported if they are post-dominated by a sink.
-    setSuppressOnSink(true);
-  }
+  // Leaks should not be reported if they are post-dominated by a sink.
+  Leak(const CheckerBase *checker, StringRef name)
+      : RefCountBug(checker, name,
+                    /*SuppressOnSink=*/true) {}
 
   const char *getDescription() const override { return ""; }
 
Index: lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
===================================================================
--- lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
+++ lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
@@ -26,8 +26,10 @@
 
 class RefCountBug : public BugType {
 protected:
-  RefCountBug(const CheckerBase *checker, StringRef name)
-      : BugType(checker, name, categories::MemoryRefCount) {}
+  RefCountBug(const CheckerBase *checker, StringRef name,
+              bool SuppressOnSink=false)
+      : BugType(checker, name, categories::MemoryRefCount,
+                SuppressOnSink) {}
 
 public:
   virtual const char *getDescription() const = 0;
Index: lib/StaticAnalyzer/Checkers/SimpleStreamChecker.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/SimpleStreamChecker.cpp
+++ lib/StaticAnalyzer/Checkers/SimpleStreamChecker.cpp
@@ -109,10 +109,10 @@
   DoubleCloseBugType.reset(
       new BugType(this, "Double fclose", "Unix Stream API Error"));
 
-  LeakBugType.reset(
-      new BugType(this, "Resource Leak", "Unix Stream API Error"));
   // Sinks are higher importance bugs as well as calls to assert() or exit(0).
-  LeakBugType->setSuppressOnSink(true);
+  LeakBugType.reset(
+      new BugType(this, "Resource Leak", "Unix Stream API Error",
+                  /*SuppressOnSink=*/true));
 }
 
 void SimpleStreamChecker::checkPostCall(const CallEvent &Call,
Index: lib/StaticAnalyzer/Checkers/ValistChecker.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/ValistChecker.cpp
+++ lib/StaticAnalyzer/Checkers/ValistChecker.cpp
@@ -276,8 +276,8 @@
           new BugType(CheckNames[CK_Unterminated].getName().empty()
                           ? CheckNames[CK_Uninitialized]
                           : CheckNames[CK_Unterminated],
-                      "Leaked va_list", categories::MemoryError));
-      BT_leakedvalist->setSuppressOnSink(true);
+                      "Leaked va_list", categories::MemoryError,
+                      /*SuppressOnSink=*/true));
     }
 
     const ExplodedNode *StartNode = getStartCallSite(N, Reg);