[Bug libfortran/33985] access="stream",form="unformatted" doesn't buffer

[jvdelisle at gcc dot gnu dot org]

------- Comment #25 from jvdelisle at gcc dot gnu dot org  2007-12-02 18:45 -------
Created an attachment (id=14682)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14682&action=view)
New patch, clean fix.

Answer to comment #18, Thomas, the flush is needed for streamio_12.f90 where we
use a write(10, pos=1) to reposition the file somewhere far from the current
buffer contents.

Status since comment#24.  Two regressions have led me to back away and take a
different approach.  I would still like to revisit the unix.c internals later.

For now, the attached patch gives the very substantial improvements in STREAM
i/o and regression tested OK on x86-64.  The patch is simple and well
contained.

I will post some benchmarks shortly and submit to list for approval.


-- 

jvdelisle at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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  Attachment #14676|0                           |1
        is obsolete|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33985