File boost-pool_check_overflow.patch of Package boost

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File boost-pool_check_overflow.patch of Package boost (Revision 6640b242637393024d7603854bcedf1a)

Currently displaying revision 6640b242637393024d7603854bcedf1a , Show latest

Upstream URL: https://svn.boost.org/trac/boost/ticket/6701

Check that request size doesn't overflow.

Index: boost/pool/pool.hpp
===================================================================
--- boost/pool/pool.hpp.orig	2007-11-25 19:07:19.000000000 +0100
+++ boost/pool/pool.hpp	2012-06-22 13:03:49.422438613 +0200
@@ -10,6 +10,8 @@
 #define BOOST_POOL_HPP
 
 #include <boost/config.hpp>  // for workarounds
+// std::numeric_limits
+#include <boost/limits.hpp>
 
 // std::less, std::less_equal, std::greater
 #include <functional>
@@ -793,6 +793,9 @@ void * pool<UserAllocator>::ordered_mall
   //! \returns Address of chunk n if allocated ok.
   //! \returns 0 if not enough memory for n chunks.
 
+  if (requested_size && (n > (std::numeric_limits<size_type>::max)() / requested_size))
+    return 0;
+
   const size_type partition_size = alloc_size();
   const size_type total_req_size = n * requested_size;
   const size_type num_chunks = total_req_size / partition_size +
@@ -975,6 +979,8 @@
   {
      if(max_alloc_size && (n > max_alloc_size))
         return 0;
+     if(chunk_size && (n > (std::numeric_limits<size_type>::max)() / chunk_size))
+        return 0;
      void* ret = (user_allocator::malloc)(chunk_size * n);
      used_list.insert(ret);
      return ret;

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File boost-pool_check_overflow.patch of Package boost (Revision 6640b242637393024d7603854bcedf1a)

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