gcc/testsuite/gfortran.dg/pr108961.f90

   1 ! { dg-do run }
   2 !
   3 ! Contributed by Jeffrey Hill  <jeffrey.p.hill@nasa.gov>
   4 !
   5 module associate_ptr
   6     use iso_c_binding
   7 contains
   8     subroutine c_f_strpointer(cptr, ptr2)
   9         type(c_ptr), target, intent(in) :: cptr
  10         character(kind=c_char,len=4), pointer :: ptr1
  11         character(kind=c_char,len=:), pointer, intent(out) :: ptr2
  12         call c_f_pointer(cptr, ptr1)
  13         if (ptr1 .ne. 'abcd') stop 1
  14         ptr2 => ptr1                              ! Failed here
  15     end subroutine
  16 end module
  17
  18 program test_associate_ptr
  19     use associate_ptr
  20     character(kind=c_char, len=1), target :: char_array(7)
  21     character(kind=c_char,len=:), pointer :: ptr2
  22     char_array = ['a', 'b', 'c', 'd', c_null_char, 'e', 'f']
  23 ! The first argument was providing a constant hidden string length => segfault
  24     call c_f_strpointer(c_loc(char_array), ptr2)
  25     if (ptr2 .ne. 'abcd') stop 2
  26 end program