write before BOF

06/06/2008, 19h29

Is there any runtime diagnostic required by C++ standard in

std:

fstream ofs("foo.bar");
ofs.seekp(-1,ios::beg);
ofs << "Gosh";

or is the result implementation defined as with writng past eof?

gorc

06/06/2008, 22h16

Hi!

Gorc schrieb:
> std:

fstream ofs("foo.bar");
> ofs.seekp(-1,ios::beg);

I expect this to set the failbit.

Frank

06/06/2008, 19h29	#1
Gorc Messages: n/a Hébergeur:	write before BOF Is there any runtime diagnostic required by C++ standard in std:fstream ofs("foo.bar"); ofs.seekp(-1,ios::beg); ofs << "Gosh"; or is the result implementation defined as with writng past eof? gorc

06/06/2008, 22h16	#2
Frank Birbacher Messages: n/a Hébergeur:	Re: write before BOF Hi! Gorc schrieb: > std:fstream ofs("foo.bar"); > ofs.seekp(-1,ios::beg); I expect this to set the failbit. Frank

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