libstdc++-v3 3.4.4: fstream does not create a file on open

[Francesco Palagi <palagi at arcetri dot astro dot it>]

Hi,
when I try to connect a non existent file to an fstream object calling
the open member function, the file is not created.
Here is a small test program:
#include <fstream>

using namespace std;

int main(int argc, char **argv)
{
	char s[81];
	fstream f;
	f.clear();
	f.open("text.txt");
	int state = f.rdstate();
	printf("%d\n",state);

	if(! f.fail()) {
		f << "la vita e' bella" << endl;
		f.flush();
	}
	f.close();
	return 0;
}
 I get state = 4

I think this is not what one would expect.

My system is:

> uname -a
Scientific Linux palagi 2.6.9-42.0.10.ELsmp #1 SMP Tue Feb 27 12:38:15
EST 2007 x86_64 x86_64 x86_64 GNU/Linux

gcc (GCC) 3.4.4 20050721 (Red Hat 3.4.4-2)

libstdc++-v3 3.4.4

Thanks for any suggestion.

Francesco Palagi


-- 
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Francesco PALAGI                 |  phone: +39 0552752216
INAF - Ist. di Radioastronomia   |  fax:   +39 055220039
Sezione di Firenze               |
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I 50142 Firenze (Italy)          |
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