Re: Bug with Visual Studio Optimizer?
Ulrich Eckhardt wrote:
Jason Hise wrote:
The following code prints GOOD in debug mode, and BAD in release
mode. Is that allowed by the standard? This was the root cause of a
very difficult to hunt down bug in my program, where I was using the
function addresses as keys into a map. I am wondering if I should
submit a bug report to Microsoft.
#include <iostream>
template<typename Type>
void foo() { }
int main()
{
std::cout << (&foo<int> == &foo<float>
? "BAD" : "GOOD") << std::endl;
return 0;
}
Just wondering, you aren't using that ten year old, unsupported and
deprecated VC6, are you? In that case, this behaviour is a known bug
and you're not going to get it fixed except by upgrading.
This also happens with the regular VC-2005 compiler. It mercilessly
prunes everything which has no apparent effect or use or isn't
different enough and often enough really crosses a line or two.
The worksaround is to put candy into foo():
template<typename T>
const std::type_info &foo()
{
return typeid(T); // all foo's have a distinct effect
}
or, alternatively:
template<typename T>
void foo()
{
std::cout << typeid(T);
}
--
IYesNo yes=YesNoFactory.getFactoryInstance().YES;
yes.getDescription().equals(array[0].toUpperCase());
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