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3.1 TMPDIR—Directory for scratch files

When opening a file with STATUS='SCRATCH', GNU Fortran tries to create the file in one of the potential directories by testing each directory in the order below.

  1. The environment variable TMPDIR, if it exists.
  2. On the MinGW target, the directory returned by the GetTempPath function. Alternatively, on the Cygwin target, the TMP and TEMP environment variables, if they exist, in that order.
  3. The P_tmpdir macro if it is defined, otherwise the directory /tmp.