------- Comment #1 from pcarlini at suse dot de 2007-04-03 09:20 -------
(In reply to comment #0)
> the output changes to: 123de. So the initialization string gets overwritten
> instead of appending the data.
And this is the correct behavior, which you can see also in many other
implementations.
Inserting name.seekp(0, ios::end); helps, but
> only for compiler version 4.0, not for 4.1 (at least I think so, I couldn't
> test this enough ATM).
It helps on any recent GCC at least, gcc4.1.1, current 4.2 pre, mainline.
> Now trying to get the right behaviour by using stringstream name("abcde",
> ios::app); or stringstream name("abcde", ios::ate); leads to another
> interesting output: abcde. The input gets completely ignored.
In this case, passing only ios::app or whatelse, you are not telling at all the
stream whether you want to write or read. ios::out | ios::app works.
Really, there is nothing to fix here. One last remark: the ultimate reference
for the behavior which is implemented is the ISO C++03 Standard (+ any
implemented DR resolution), therefore always confer to it in case of doubt
about minute details, not books or manuals.
--
pcarlini at suse dot de changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c++ |libstdc++
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31456
