Microsoft KB Archive/216731

= FIX: Failure To Call Destructor of Explicitly Constructed Anonymous Temporary =

Article ID: 216731

Article Last Modified on 11/18/2003

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APPLIES TO


 * Microsoft Visual C++ 6.0 Enterprise Edition
 * Microsoft Visual C++ 6.0 Professional Edition
 * Microsoft Visual C++ 6.0 Standard Edition

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This article was previously published under Q216731



SYMPTOMS
When an explicitly constructed anonymous temporary of template type that has a default constructor with a default argument is used in an expression, it is never destroyed.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.

This bug was corrected in Visual Studio 6.0 Service Pack 3. For more information about Visual Studio service packs, please see the following articles in the Microsoft Knowledge Base:

194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

194295 HOWTO: Tell That Visual Studio 6.0 Service Packs Are Installed



Sample Code
const int ex = 4;
 * 1) include 

template struct CPtr { CPtr(int e = ex) { m_ptr = new T; printf("In CPtr::CPtr\n"); }

T *operator-> const { return m_ptr; }

~CPtr { printf("In CPtr::~CPtr\n"); }

T *m_ptr; };

struct I { int mf {return 1;} };

int main {   bool fFlag = false; if ((CPtr->mf < 0) && !fFlag) return 1; return 0; } The output is:

In CPtr::CPtr The output should be:

In CPtr::CPtr In CPtr::~CPtr

Keywords: kbbug kbfix kbvc600fix kbcpponly kbcompiler kbvs600sp3fix KB216731

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