gcc/testsuite/gfortran.dg/transfer_simplify_4.f90

   1 ! { dg-do run }
   2 ! Tests that the in-memory representation of a transferred variable
   3 ! propagates properly.
   4 !
   5   implicit none
   6
   7   integer, parameter :: ip1 = 42
   8   integer, parameter :: ip2 = transfer(transfer(ip1, .true.), 0)
   9   integer :: i, ai(4)
  10   logical :: b
  11
  12   if (ip2 .ne. ip1) STOP 1
  13
  14   i = transfer(transfer(ip1, .true.), 0)
  15   if (i .ne. ip1) STOP 2
  16
  17   i = 42
  18   i = transfer(transfer(i, .true.), 0)
  19   if (i .ne. ip1) STOP 3
  20
  21   b = transfer(transfer(.true., 3.1415), .true.)
  22   if (.not.b) STOP 4
  23
  24   b = transfer(transfer(.false., 3.1415), .true.)
  25   if (b) STOP 5
  26
  27   i = 0
  28   b = transfer(i, .true.)
  29   ! The standard doesn't guarantee here that b will be .false.,
  30   ! though in gfortran for all targets it will.
  31
  32   ai = (/ 42, 42, 42, 42 /)
  33   ai = transfer (transfer (ai, .false., 4), ai)
  34   if (any(ai .ne. 42)) STOP 1
  35
  36   ai = transfer (transfer ((/ 42, 42, 42, 42 /), &
  37 &                          (/ .false., .false., .false., .false. /)), ai)
  38   if (any(ai .ne. 42)) STOP 2
  39 end