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| author | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2017-12-14 02:30:49 +0000 |
|---|---|---|
| committer | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2017-12-14 02:30:49 +0000 |
| commit | 606778c6f55c4df1f247097f4b73d2c551ff4889 (patch) | |
| tree | 5f68781b01180ebf39912f3254d5c1028b162c6c /libgfortran/io/unit.c | |
| parent | e69319afa646a9aba9eac5a8c16f9e7883f210e6 (diff) | |
| download | gcc-606778c6f55c4df1f247097f4b73d2c551ff4889.zip gcc-606778c6f55c4df1f247097f4b73d2c551ff4889.tar.gz gcc-606778c6f55c4df1f247097f4b73d2c551ff4889.tar.bz2 | |
re PR libfortran/78549 (Very slow formatted internal file output)
2017-12-12 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/78549
* io/inquire.c (inquire_via_unit): Adjust test for existence for
pre-connected internal units.
* io/transfer.c (finalize_transfer): When done with a transfer
to internal units, free the format buffer and close the stream.
(st_read_done): Delete freeing the stream, now handled using
sclose in finalize_transfer. (st_write_done): Likewise.
* io/unit.c (get_unit): Return NULL for special reserved unit
numbers, signifying not accessible to the user.
(init_units): Insert the two special internal units into the
unit treap. This makes these unit structures available without
further allocations for later use by internal unit I/O. These
units are automatically deleted by normal program termination.
* io/unix.c (mem_close): Add a guard check to protect from double free.
From-SVN: r255621
Diffstat (limited to 'libgfortran/io/unit.c')
| -rw-r--r-- | libgfortran/io/unit.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libgfortran/io/unit.c b/libgfortran/io/unit.c index 66cd12d..2ca8525 100644 --- a/libgfortran/io/unit.c +++ b/libgfortran/io/unit.c @@ -566,7 +566,11 @@ get_unit (st_parameter_dt *dtp, int do_create) is not allowed, such units must be created with OPEN(NEWUNIT=...). */ if (dtp->common.unit < 0) - return get_gfc_unit (dtp->common.unit, 0); + { + if (dtp->common.unit > NEWUNIT_START) /* Reserved units. */ + return NULL; + return get_gfc_unit (dtp->common.unit, 0); + } return get_gfc_unit (dtp->common.unit, do_create); } @@ -701,6 +705,9 @@ init_units (void) __gthread_mutex_unlock (&u->lock); } + /* The default internal units. */ + u = insert_unit (GFC_INTERNAL_UNIT); + u = insert_unit (GFC_INTERNAL_UNIT4); } |