Mail Archives: djgpp/1997/02/10/15:23:52
Jerzy DOT Witkowski AT ii DOT uni DOT wroc DOT pl (Jerzy Witkowski) writes:
>
> A friend of mine found a bug in `fstream' class of the `iostream'
> library. The bug makes impossible opening single file for both
> reading and writing. It is present in both 2.00 and 2.01
> versions.
>
> The example program is included below. It produces the following
> results:
> on Sparc with Solaris 2.4 and gcc 2.7.2:
> [klm/k-m] (correct)
> on PC with DOS and Borland C++ 3.1:
> [mlk/m-k] (also correct, I think :-)
> on PC with DOS and DJGPP 2.xx:
> [ / ] (not spaces, but (char)(255), also data file corrupted)
>
> Any suggestions?
I have had problems with fstream too. I made them less bad by getting the
libstdcx sources and compiling them myself. Evidently, the distributed
binary library is not up to date (or wasn't the last time I looked).
For the record, my problem was that creating a fstream object with an omode
of ios::in|ios::out truncated an existing file to zero length. Once I had
regenerated the libstdcx.a library it stopped doing that.
I do still have one problem however. The get and put "streamposes" returned
by tellg() and tellp() are always the same. I think they should be
independent.
Any suggestions? ;-)
--
Ian Miller, Dorset, UK
DJGPP 2.01, Win95 DOS box (LFN undefined, FNCASE=y)
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