..
  Copyright 1988-2022 Free Software Foundation, Inc.
  This is part of the GCC manual.
  For copying conditions, see the copyright.rst file.

.. _gfortran_unformatted_buffer_size:

GFORTRAN_UNFORMATTED_BUFFER_SIZE---Set buffer size for unformatted I/O
**********************************************************************

The :envvar:`GFORTRAN_UNFORMATTED_BUFFER_SIZE` environment variable
specifies buffer size in bytes to be used for unformatted output.
The default value is 131072.