Hi,

Consider the following:

std::fstream file("someFile.dat, std::ios::in | std::ios::bin);
long b;
file.read( (char*)&b, sizeof(b) );
long offset = file.tellp();

Using gcc 3.3 on Solaris, the tellp call will set some bit (forgive for
not knowing which one) such that file.good() returns false and offset =
-1. Using Visual Studio 7.1 on Windows 2000, the tellp works and returns
the proper offset. Is the behavior of using tellp on a stream open for
writing undefined, implemenation specific, or what?

thanks,
matthew

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The standard doesn't require that the function set any bits unless it
catches an exception, so it probably shouldn't set any. FWIW, though,
I don't see any code in gcc 3.3.2 sources that sets any bits under any
conditions (this looks fixed in 3.4), so I'm not sure what's going on
in your program.

Martin

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