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authordfranke <dfranke@138bc75d-0d04-0410-961f-82ee72b054a4>2007-05-04 18:02:18 +0000
committerdfranke <dfranke@138bc75d-0d04-0410-961f-82ee72b054a4>2007-05-04 18:02:18 +0000
commit7d86687017fb9bfa58571cfc46f786f539ba2601 (patch)
treef5fbb8c905ad4fe8db79b23d98f6fdde28648680 /libgfortran/io/intrinsics.c
parent71ac9b47b872934e8d78ff35882d69f845545fbd (diff)
downloadgcc-7d86687017fb9bfa58571cfc46f786f539ba2601.tar.gz
gcc/fortran:
2007-05-04 Daniel Franke <franke.daniel@gmail.com> PR fortran/22539 * intrinsic.c (add_subroutines): Added FSEEK. * intrinsic.h (gfc_resolve_fseek_sub, gfc_check_fseek_sub): New. * iresolve.c (gfc_resolve_fseek_sub): New. * check.c (gfc_check_fseek_sub): New. * intrinsic.texi (FSEEK): Updated. gcc/testsuite: 2007-05-01 Daniel Franke <franke.daniel@gmail.com> PR fortran/22539 * gfortran.dg/fseek.f90: New test. libgfortran: 2007-05-04 Daniel Franke <franke.daniel@gmail.com> PR fortran/22539 * io/intrinsics.c (fseek_sub): New. * io/unix.c (fd_fseek): Change logical and physical offsets only if seek succeeds. * gfortran.map (fseek_sub): New. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@124437 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libgfortran/io/intrinsics.c')
-rw-r--r--libgfortran/io/intrinsics.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/libgfortran/io/intrinsics.c b/libgfortran/io/intrinsics.c
index ab99b25e5a5..2402f486926 100644
--- a/libgfortran/io/intrinsics.c
+++ b/libgfortran/io/intrinsics.c
@@ -228,6 +228,34 @@ flush_i8 (GFC_INTEGER_8 *unit)
}
}
+/* FSEEK intrinsic */
+
+extern void fseek_sub (int *, GFC_IO_INT *, int *, int *);
+export_proto(fseek_sub);
+
+void
+fseek_sub (int * unit, GFC_IO_INT * offset, int * whence, int * status)
+{
+ gfc_unit * u = find_unit (*unit);
+ try result = FAILURE;
+
+ if (u != NULL && is_seekable(u->s))
+ {
+ if (*whence == 0)
+ result = sseek(u->s, *offset); /* SEEK_SET */
+ else if (*whence == 1)
+ result = sseek(u->s, file_position(u->s) + *offset); /* SEEK_CUR */
+ else if (*whence == 2)
+ result = sseek(u->s, file_length(u->s) + *offset); /* SEEK_END */
+
+ unlock_unit (u);
+ }
+
+ if (status)
+ *status = (result == FAILURE ? -1 : 0);
+}
+
+
/* FTELL intrinsic */