Article ID: 166719
Article Last Modified on 7/5/2005
APPLIES TO
- Microsoft Visual C++ 5.0 Enterprise Edition
- Microsoft Visual C++ 5.0 Professional Edition
This article was previously published under Q166719
SYMPTOMS
The wrong exception is rethrown when global optimization (/Og) is enabled. For example, in the following sample, the correct output is:
A 1st throw
B 2nd throw
C 1st throw
However, if global optimization (/Og) is enabled, the output is:
A 1st throw
B 2nd throw
C 2nd throw
RESOLUTION
To work around the problem, disable the global optimization on the command line or use the optimize pragma to disable the optimization for the function where the problem occurs. For example:
#pragma optimize("g", off)
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was corrected in Microsoft Visual C++ version 6.0.
MORE INFORMATION
Sample Code
//test.cpp
/* Compiler options needed : /GX */
#include <iostream>
using namespace std;
#pragma optimize("g", on)
void main() {
try
{
char* pStr = NULL;
try
{
throw "1st throw\n";
}
catch( char* str )
{
cout << "A " << str;
try
{
throw "2nd throw\n";
}
catch( char* str )
{
cout <<"B "<< str;
}
throw;
}
}
catch ( char* str )
{
cout <<"C "<< str;
}
}
Keywords: kbbug kbfix kbvc600fix kbcode KB166719
