From 3b19458fed6cf6f34970a6103c70abbca9d63f92 Mon Sep 17 00:00:00 2001
From: Phil Nash <github@philnash.me>
Date: Thu, 28 Apr 2016 07:54:57 +0100
Subject: [PATCH] Removed use of dynamic_cast for MultipleReporters (Thanks to
 #630, #636 and #648)

---
 include/internal/catch_interfaces_reporter.h | 3 +++
 include/reporters/catch_reporter_multi.hpp   | 7 ++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/internal/catch_interfaces_reporter.h b/include/internal/catch_interfaces_reporter.h
index d1c6e70..98e2cd6 100644
--- a/include/internal/catch_interfaces_reporter.h
+++ b/include/internal/catch_interfaces_reporter.h
@@ -219,6 +219,7 @@ namespace Catch
         bool aborting;
     };
 
+    class MultipleReporters;
 
     struct IStreamingReporter : IShared {
         virtual ~IStreamingReporter();
@@ -247,6 +248,8 @@ namespace Catch
         virtual void testRunEnded( TestRunStats const& testRunStats ) = 0;
 
         virtual void skipTest( TestCaseInfo const& testInfo ) = 0;
+        
+        virtual MultipleReporters* tryAsMulti() { return CATCH_NULL; }
     };
 
 
diff --git a/include/reporters/catch_reporter_multi.hpp b/include/reporters/catch_reporter_multi.hpp
index d328266..7fc08f6 100644
--- a/include/reporters/catch_reporter_multi.hpp
+++ b/include/reporters/catch_reporter_multi.hpp
@@ -118,13 +118,18 @@ public: // IStreamingReporter
                 ++it )
             (*it)->skipTest( testInfo );
     }
+    
+    virtual MultipleReporters* tryAsMulti() CATCH_OVERRIDE {
+        return this;
+    }
+    
 };
 
 Ptr<IStreamingReporter> addReporter( Ptr<IStreamingReporter> const& existingReporter, Ptr<IStreamingReporter> const& additionalReporter ) {
     Ptr<IStreamingReporter> resultingReporter;
 
     if( existingReporter ) {
-        MultipleReporters* multi = dynamic_cast<MultipleReporters*>( existingReporter.get() );
+        MultipleReporters* multi = existingReporter->tryAsMulti();
         if( !multi ) {
             multi = new MultipleReporters;
             resultingReporter = Ptr<IStreamingReporter>( multi );