[Bug libstdc++/45628] std::fstream::tellg invalidates I/O buffer

[potswa at mac dot com]

------- Comment #25 from potswa at mac dot com  2010-09-10 19:26 -------
Created an attachment (id=21769)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21769&action=view)
alternative approach. untested

I hope this compiles ;v) . But it seems to "color within the lines."

Why does your patch call setp/setg to (re?)invalidate the opposite area? And
then declares it is neither reading nor writing? Also, -1 return from _M_seek
is not handled in seekoff.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45628