gcc/testsuite/gfortran.dg/c_sizeof_1.f90

   1 ! { dg-do run }
   2 ! Support F2008's c_sizeof()
   3 !
   4 use iso_c_binding, only: c_int, c_char, c_ptr, c_intptr_t, c_null_ptr, c_sizeof
   5
   6 integer(kind=c_int) :: i, j(10)
   7 character(kind=c_char,len=4),parameter :: str(1 ) = "abcd"
   8 character(kind=c_char,len=1),parameter :: str2(4) = ["a","b","c","d"]
   9 type(c_ptr) :: cptr
  10 integer(c_intptr_t) :: iptr
  11
  12 ! Using F2008's C_SIZEOF
  13 i = c_sizeof(i)
  14 if (i /= 4) STOP 1
  15
  16 i = c_sizeof(j)
  17 if (i /= 40) STOP 2
  18
  19 i = c_sizeof(str2)
  20 if (i /= 4) STOP 3
  21
  22 i = c_sizeof(str2(1))
  23 if (i /= 1) STOP 4
  24
  25 write(*,*) c_sizeof(cptr), c_sizeof(iptr), c_sizeof(C_NULL_PTR)
  26
  27 ! Using GNU's SIZEOF
  28 i = sizeof(i)
  29 if (i /= 4) STOP 5
  30
  31 i = sizeof(j)
  32 if (i /= 40) STOP 6
  33
  34 i = sizeof(str)
  35 if (i /= 4) STOP 7
  36
  37 i = sizeof(str(1))
  38 if (i /= 4) STOP 8
  39
  40 i = sizeof(str(1)(1:3))
  41 if (i /= 3) STOP 9
  42
  43 end
  44