Index: clang/lib/StaticAnalyzer/Checkers/RunLoopAutoreleaseLeakChecker.cpp
===================================================================
--- clang/lib/StaticAnalyzer/Checkers/RunLoopAutoreleaseLeakChecker.cpp
+++ clang/lib/StaticAnalyzer/Checkers/RunLoopAutoreleaseLeakChecker.cpp
@@ -45,6 +45,7 @@
 const char * RunLoopRunBind = "RunLoopRunM";
 const char * OtherMsgBind = "OtherMessageSentM";
 const char * AutoreleasePoolBind = "AutoreleasePoolM";
+const char * OtherStmtAutoreleasePoolBind = "OtherAutoreleasePoolM";
 
 class RunLoopAutoreleaseLeakChecker : public Checker<
                                       check::ASTCodeBody> {
@@ -110,6 +111,8 @@
 
   const auto *AP =
       Match.getNodeAs<ObjCAutoreleasePoolStmt>(AutoreleasePoolBind);
+  const auto *OAP =
+      Match.getNodeAs<ObjCAutoreleasePoolStmt>(OtherStmtAutoreleasePoolBind);
   bool HasAutoreleasePool = (AP != nullptr);
 
   const auto *RL = Match.getNodeAs<ObjCMessageExpr>(RunLoopBind);
@@ -120,6 +123,9 @@
   if (HasAutoreleasePool && seenBefore(AP, RLR, ME))
     return;
 
+  if (HasAutoreleasePool && (OAP != AP))
+    return; 
+
   if (!HasAutoreleasePool && seenBefore(DeclBody, RLR, ME))
     return;
 
@@ -169,7 +175,8 @@
 checkTempObjectsInSamePool(const Decl *D, AnalysisManager &AM, BugReporter &BR,
                            const RunLoopAutoreleaseLeakChecker *Chkr) {
   StatementMatcher RunLoopRunM = getRunLoopRunM();
-  StatementMatcher OtherMessageSentM = getOtherMessageSentM();
+  StatementMatcher OtherMessageSentM = getOtherMessageSentM(
+    hasAncestor(autoreleasePoolStmt().bind(OtherStmtAutoreleasePoolBind)));
 
   StatementMatcher RunLoopInAutorelease =
       autoreleasePoolStmt(
Index: clang/test/Analysis/Checkers/RunLoopAutoreleaseLeakChecker.m
===================================================================
--- clang/test/Analysis/Checkers/RunLoopAutoreleaseLeakChecker.m
+++ clang/test/Analysis/Checkers/RunLoopAutoreleaseLeakChecker.m
@@ -29,6 +29,17 @@
   }
 }
 
+void runloop_init_before_separate_pool() { // No warning: separate autorelease pool.
+  @autoreleasepool {
+    NSObject *object;
+    @autoreleasepool {
+      object = [[NSObject alloc] init]; // no-warning
+    }
+    (void) object;
+    [[NSRunLoop mainRunLoop] run]; 
+  }
+}
+
 void xpcmain_init_before() { // Warning: object created before the loop.
   @autoreleasepool {
     NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool followed by the launch of xpc_main may never get released; consider moving them to a separate autorelease pool}}