From ba5e4c30c65fe7e00abdc3ee2e87b305b0678b00 Mon Sep 17 00:00:00 2001
From: Pavol Droba <droba@topmail.sk>
Date: Tue, 17 Jun 2008 21:58:58 +0000
Subject: [PATCH] fixed the rle example crash

[SVN r46463]
---
 string/example/rle_example.cpp | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/string/example/rle_example.cpp b/string/example/rle_example.cpp
index 26ec5b8..9e52b96 100644
--- a/string/example/rle_example.cpp
+++ b/string/example/rle_example.cpp
@@ -114,10 +114,13 @@ public:
     result_type operator()( const ReplaceT& Replace ) const
     {
         SeqT r;
-        r.push_back( repeat_mark<value_type>() );
-        r.push_back( *(Replace.begin()) );
-        r.push_back( value_type( Replace.size() ) );
-        
+        if(!Replace.empty())
+        {
+            r.push_back( repeat_mark<value_type>() );
+            r.push_back( *(Replace.begin()) );
+            r.push_back( value_type( Replace.size() ) );
+        }
+
         return r;
     }
 };
@@ -183,14 +186,18 @@ public:
     template< typename ReplaceT >
     result_type operator()( const ReplaceT& Replace ) const
     {
-        // extract info
-        typename ReplaceT::const_iterator It=Replace.begin();
-
-        value_type Value=*(++It);
-        value_type Repeat=*(++It);
-        
         SeqT r;
-        for( value_type Index=0; Index<Repeat; Index++ ) r.push_back( Value );
+
+        if(!Replace.empty())
+        {
+            // extract info
+            typename ReplaceT::const_iterator It=Replace.begin();
+
+            value_type Value=*(++It);
+            value_type Repeat=*(++It);
+
+            for( value_type Index=0; Index<Repeat; Index++ ) r.push_back( Value );
+        }
 
         return r;
     }