diff options
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gfortran.dg/direct_io_4.f90 | 22 | ||||
| -rw-r--r-- | libgfortran/ChangeLog | 6 | ||||
| -rw-r--r-- | libgfortran/io/transfer.c | 15 |
4 files changed, 47 insertions, 1 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d9a5e534216..0988d1cad03 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2005-09-04 Thomas Koenig <Thomas.Koenig@online.de> + + PR libfortran/23321 + * gfortran.dg/direct_io_4.f90: New test case. + 2005-09-04 Andrew Pinski <pinskia@physics.uc.edu> Rasmus Hahn <rassahah@neofonie.de> diff --git a/gcc/testsuite/gfortran.dg/direct_io_4.f90 b/gcc/testsuite/gfortran.dg/direct_io_4.f90 new file mode 100644 index 00000000000..05079673514 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/direct_io_4.f90 @@ -0,0 +1,22 @@ +! { dg-do run } +! PR 23321 : Running off the end of a file was not detected with direct I/O. +program main + implicit none + integer(kind=1) :: a, b + integer :: ios, i + + a = 42 + open (unit=10,status="scratch",recl=1,access="direct") + write(10,rec=1) a + + read (10,rec=2, iostat=ios) b + if (ios == 0) call abort + + read (10, rec=82641, iostat=ios) b ! This used to cause a segfault + if (ios == 0) call abort + + read(10, rec=1, iostat=ios) b + if (ios /= 0) call abort + if (a /= b) call abort + +end program main 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 ? |