gcc/testsuite/gfortran.dg/open_negative_unit_1.f90

   1 ! { dg-do run }
   2 ! PR48618 - Negative unit number in OPEN(...) is sometimes allowed
   3 !
   4 ! Test originally from Janne Blomqvist in PR:
   5 ! http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48618
   6
   7 program nutest
   8     implicit none
   9     logical l
  10     integer id, ios
  11
  12     open(newunit=id, file="foo_open_negative_unit_1.txt", iostat=ios)
  13     if (ios /= 0) STOP 1
  14
  15     open(id, file="bar.txt", iostat=ios)
  16     if (ios /= 0) STOP 2
  17
  18     close(id, status="delete")
  19
  20     open(unit=10, file="foo_open_negative_unit_1.txt", status="old", iostat=ios)
  21     if (ios /= 0) STOP 3
  22
  23     close(10, status="delete")
  24
  25     open(-10, file="foo_open_negative_unit_1.txt", iostat=ios)
  26     if (ios == 0) STOP 4
  27
  28     inquire(file="foo_open_negative_unit_1.txt", exist=l)
  29     if (l) STOP 5
  30 end program nutest