diff options
Diffstat (limited to 'libgfortran')
| -rw-r--r-- | libgfortran/ChangeLog | 6 | ||||
| -rw-r--r-- | libgfortran/io/transfer.c | 15 |
2 files changed, 20 insertions, 1 deletions
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog index 02df5fd0858..20239792ea4 100644 --- a/libgfortran/ChangeLog +++ b/libgfortran/ChangeLog @@ -1,3 +1,9 @@ +2005-09-04 Thomas Koenig <Thomas.Koenig@online.de> + + PR libfortran/23321 + * io/transfer.c(data_transfer_init): Check for a too-large + record number. Return if sseek failed. + 2005-09-03 Jakub Jelinek <jakub@redhat.com> * io/read.c (read_x): Take int argument instead of fnode * and diff --git a/libgfortran/io/transfer.c b/libgfortran/io/transfer.c index 7449f02d3dd..59eb22d3dec 100644 --- a/libgfortran/io/transfer.c +++ b/libgfortran/io/transfer.c @@ -1160,10 +1160,23 @@ data_transfer_init (int read_flag) if (g.mode == READING && current_unit->mode == WRITING) flush(current_unit->s); + /* Check whether the record exists to be read. Only + a partial record needs to exist. */ + + if (g.mode == READING && (ioparm.rec -1) + * current_unit->recl >= file_length (current_unit->s)) + { + generate_error (ERROR_BAD_OPTION, "Non-existing record number"); + return; + } + /* Position the file. */ if (sseek (current_unit->s, (ioparm.rec - 1) * current_unit->recl) == FAILURE) - generate_error (ERROR_OS, NULL); + { + generate_error (ERROR_OS, NULL); + return; + } } /* Overwriting an existing sequential file ? |