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Diffstat (limited to 'gcc/testsuite/gfortran.dg')
| -rw-r--r-- | gcc/testsuite/gfortran.dg/namelist_27.f90 | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/namelist_27.f90 b/gcc/testsuite/gfortran.dg/namelist_27.f90 new file mode 100644 index 00000000000..10b0031e894 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/namelist_27.f90 @@ -0,0 +1,106 @@ +! { dg-do run } +! PR31052 Bad IOSTAT values when readings NAMELISTs past EOF. +! Patch derived from PR, submitted by Jerry DeLisle <jvdelisle@gcc.gnu.org> +program gfcbug61 + implicit none + integer :: stat + + open (12, status="scratch") + write (12, '(a)')"!================" + write (12, '(a)')"! Namelist REPORT" + write (12, '(a)')"!================" + write (12, '(a)')" &REPORT type = 'SYNOP' " + write (12, '(a)')" use = 'active'" + write (12, '(a)')" max_proc = 20" + write (12, '(a)')" /" + write (12, '(a)')"! Other namelists..." + write (12, '(a)')" &OTHER i = 1 /" + rewind (12) + + ! Read /REPORT/ the first time + rewind (12) + call position_nml (12, "REPORT", stat) + if (stat.ne.0) call abort() + if (stat == 0) call read_report (12, stat) + + ! Comment out the following lines to hide the bug + rewind (12) + call position_nml (12, "MISSING", stat) + if (stat.ne.-1) call abort () + + ! Read /REPORT/ again + rewind (12) + call position_nml (12, "REPORT", stat) + if (stat.ne.0) call abort() + +contains + + subroutine position_nml (unit, name, status) + ! Check for presence of namelist 'name' + integer :: unit, status + character(len=*), intent(in) :: name + + character(len=255) :: line + integer :: ios, idx + logical :: first + + first = .true. + status = 0 + ios = 0 + line = "" + do + read (unit,'(a)',iostat=ios) line + if (first) then + first = .false. + end if + if (ios < 0) then + ! EOF encountered! + backspace (unit) + status = -1 + return + else if (ios > 0) then + ! Error encountered! + status = +1 + return + end if + idx = index (line, "&"//trim (name)) + if (idx > 0) then + backspace (unit) + return + end if + end do + end subroutine position_nml + + subroutine read_report (unit, status) + integer :: unit, status + + integer :: iuse, ios + !------------------ + ! Namelist 'REPORT' + !------------------ + character(len=12) :: type, use + integer :: max_proc + namelist /REPORT/ type, use, max_proc + !------------------------------------- + ! Loop to read namelist multiple times + !------------------------------------- + iuse = 0 + do + !---------------------------------------- + ! Preset namelist variables with defaults + !---------------------------------------- + type = '' + use = '' + max_proc = -1 + !-------------- + ! Read namelist + !-------------- + read (unit, nml=REPORT, iostat=ios) + if (ios /= 0) exit + iuse = iuse + 1 + end do + if (iuse.ne.1) call abort() + status = ios + end subroutine read_report + +end program gfcbug61
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