From 482bf0f5315726c02afc3737a60ef6c857234265 Mon Sep 17 00:00:00 2001
From: George Karpenkov <ekarpenkov@apple.com>
Date: Tue, 27 Feb 2018 19:19:49 +0000
Subject: [PATCH] [analyzer] Quickfix: don't crash when runtime definition is
 not available.

llvm-svn: 326230
---
 clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp b/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
index 54150ef..f5b4e7c 100644
--- a/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
+++ b/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
@@ -321,9 +321,11 @@ private:
   /// Get parameters associated with runtime definition in order
   /// to get the correct parameter name.
   ArrayRef<ParmVarDecl *> getCallParameters(CallEventRef<> Call) {
-    if (isa<FunctionDecl>(Call->getDecl()))
-      return dyn_cast<FunctionDecl>(Call->getRuntimeDefinition().getDecl())
-          ->parameters();
+    // Use runtime definition, if available.
+    RuntimeDefinition RD = Call->getRuntimeDefinition();
+    if (auto *FD = dyn_cast_or_null<FunctionDecl>(RD.getDecl()))
+      return FD->parameters();
+
     return Call->parameters();
   }
 
-- 
2.7.4