gcc/testsuite/gfortran.dg/bind_c_char_2.f90

   1 ! { dg-do run }
   2 !
   3 ! PR fortran/85781
   4 !
   5 ! Co-contributed by G. Steinmetz
   6
   7   use iso_c_binding, only: c_char
   8   call s(c_char_'x', 1, 1)
   9   call s(c_char_'x', 1, 0)
  10   call s(c_char_'x', 0, -2)
  11 contains
  12   subroutine s(x,m,n) bind(c)
  13     use iso_c_binding, only: c_char
  14     character(kind=c_char), value :: x
  15     call foo(x(m:n), m, n)
  16     if (n < m) then
  17       if (len(x(m:n)) /= 0) stop 1
  18       if (x(m:n) /= "") stop 2
  19     else if (n == 1) then
  20       if (len(x(m:n)) /= 1) stop 1
  21       if (x(m:n) /= "x") stop 2
  22     else
  23       stop 14
  24     end if
  25     call foo(x(1:1), 1, 1)
  26     call foo(x(1:0), 1, 0)
  27     call foo(x(2:1), 2, 1)
  28     call foo(x(0:-4), 0, -4)
  29
  30     call foo(x(1:), 1, 1)
  31     call foo(x(2:), 2, 1)
  32     call foo(x(:1), 1, 1)
  33     call foo(x(:0), 1, 0)
  34
  35     if (n == 1) call foo(x(m:), m, n)
  36     if (m == 1) call foo(x(:n), m, n)
  37   end
  38   subroutine foo(str, m, n)
  39     character(len=*) :: str
  40     if (n < m) then
  41       if (len(str) /= 0) stop 11
  42       if (str /= "") stop 12
  43     else if (n == 1) then
  44       if (len(str) /= 1) stop 13
  45       if (str /= "x") stop 14
  46     else
  47       stop 14
  48     end if
  49   end
  50 end