diff options
Diffstat (limited to 'libgfortran/io/close.c')
| -rw-r--r-- | libgfortran/io/close.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/libgfortran/io/close.c b/libgfortran/io/close.c index 8122311..41d278c 100644 --- a/libgfortran/io/close.c +++ b/libgfortran/io/close.c @@ -84,8 +84,17 @@ st_close (st_parameter_close *clp) if (u != NULL) { - if (close_share (u) < 0) - generate_error (&clp->common, LIBERROR_OS, "Problem in CLOSE"); + if (u->s == NULL) + { + if (u->unit_number < 0) + generate_error (&clp->common, LIBERROR_BAD_UNIT, + "Unit number is negative with no associated file"); + library_end (); + return; + } + else + if (close_share (u) < 0) + generate_error (&clp->common, LIBERROR_OS, "Problem in CLOSE"); if (u->flags.status == STATUS_SCRATCH) { if (status == CLOSE_KEEP) |