Re: expected behaviour of << operator
* Alf P. Steinbach:
* Carlo Capelli:
Hi all.
Some time ago, upgrading MSVC, i had to debug a little problem, rising
from the change of behaviour of the following code:
#include <fstream>
void main()
{
std::ofstream("dummy") << "hello" << std::endl;
}
Using MSVC6, this resulted in a file dummy containing 'hello', after
the upgrade to VisualStudio2005 the file contains the numeric
address (like a fprintf(dummy, "%p", "hello\n"), or
std::ofstream("dummy") << (void*)"hello").
Also gc (i don't know the version) that at the time come with Dev-C++
agreed with the former outcome.
In my POV, this was a bug of the new compiler/enviroment (i.e. some
change of scope resolution ot include...), so I queried over MS
listserv, obtaining a querelle (of rather technical level) among (i
presume) the compiler' implementors. The outcome was that the compiler
should reject the code as invalid.
What do you think about?
It's currently invalid.
Too fast, very very sorry.
Now I've got some coffee in my system.
It should find and use the member function basic_ostream::operator<<(
void const* ).
If you care to search you will find this discussed recently in this
group, as well as many threads earlier, but mostly using stringstream.
Cheers,
- Alf
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