VC++ 2005的STL的内存泄露

2005 CRT memory leaks: std::basic_iostream ( affects std::stringstream, std::fstream, probably others )！！！

这真是件让人郁闷的事情！下面的代码将重现这个错误：

1 #include <sstream>
2
3 int main()
4 {
5     unsigned int x = 10000000;
6     while( x-- )
7     {
8         std::iostream s(0);
9     }
10 }

每次泄漏是4Bytes, 结果可想而知！当然，这么重要的错误，MS不可能没有反应。FDBK40119#1: Patch ostream and istream and rebuild msvcp80.dll (http://lab.msdn.microsoft.com/ProductFeedback/ViewWorkaround.aspx?FeedbackID=FDBK40119#1) 有说明解决方案，不过由于要手动操作，给人的感觉并不好。不过，不手动操作又无法解决这个问题，因为：

We have plans for two service pack releases for the first part of 2006:

VS 2003 SP1 is scheduled for April 2006. We have done much of the work for this release already, and are anxious to get it to you.
VS 2005 SP1 is scheduled for the first half of 2006. We will be more specific about the date in a few months, once we have more customer data.

(http://blogs.msdn.com/scottwil/archive/2005/11/07/490007.aspx)

-------------------

手动操作的说明：

References:

P.J. Plauger, Dinkumware - Supplied the modified constructors.

"Building the Run-Time Libraries, MSDN2 online, http://msdn2.microsoft.com/en-us/library/k9a8ehy3.aspx - How to rebuild the MSVC runtime libraries.

Workaround Steps:
1. Change the relevant constructor in

{C:/Program Files/Microsoft Visual Studio 8}/vc/include/istream and
{C:/Program Files/Microsoft Visual Studio 8}/vc/crt/src/istream
* directory between {} is the location of the MSVC 8 install directory

explicit __CLR_OR_THIS_CALL basic_iostream(basic_streambuf<_Elem,_Traits> *_Strbuf)
: basic_istream<_Elem, _Traits>(_Strbuf, false),
basic_ostream<_Elem, _Traits>(_Noinit, false)
{ // construct from stream buffer pointer
}

注：修改前内容
explicit __CLR_OR_THIS_CALL basic_iostream(basic_streambuf<_Elem, _Traits> *_Strbuf)
  : basic_istream<_Elem, _Traits>(_Strbuf, false),
   basic_ostream<_Elem, _Traits>(_Strbuf)
  { // construct from stream buffer pointer
  }

2. Change the relevant constructor in

{C:/Program Files/Microsoft Visual Studio 8}/vc/include/ostream and
{C:/Program Files/Microsoft Visual Studio 8}/vc/crt/src/ostream

__CLR_OR_THIS_CALL basic_ostream(_Uninitialized, bool _Addit = true)
{ // construct uninitialized
if (_Addit)
ios_base::_Addstd(this); // suppress for
iostream
}

注修改前内容：
     __CLR_OR_THIS_CALL basic_ostream(_Uninitialized)
      { // construct uninitialized
      ios_base::_Addstd(this);
      }

3. Rebuild the MSVC libraries by running:

{C:/Program Files/Microsoft Visual Studio 8}/vc/crt/src/bldnt.cmd
* See reference link from description for details on rebuilding the MSVC libraries.

注：注意使用前需要设置一个环境变量，makefile文件中有相关说明
    # If your MSVC++ 8.0 installation is not in the default installation path
    # of "/Program Files/Microsoft Visual Studio 8/VC" on the current drive,
    # set the environment variable VCTOOLS to point to the main directory
    # of your installation. (For example, "set VCTOOLS=C:/VS.NET/VC8")

4. Modify the Visual Studio project files

a. Properties->Linker->Input , "Ignore Specific Libraries" : msvcprt.lib;msvcrt.lib
b. Properties->Linker->Input, "Additional Dependencies" :
"{C:/Program Files/Microsoft Visual Studio 8}/vc/crt/src/build/intel/sample_p.lib"
"{C:/Program Files/Microsoft Visual Studio 8}/vc/crt/src/build/intel/_sample_.lib"
* Refer to reference link from description on details of the file naming.

5. Put the sample_p.dll and _sample_.dll in the same directory as your app ( or follow the rules for side-by-side deployment).

转载自：http://www.cnblogs.com/WuErPIng/archive/2006/01/01/309514.html

作者：吴尔平