gcc/testsuite/gfortran.dg/forall_12.f90

   1 ! { dg-do run }
   2 ! Tests the fix for PR31217 and PR33811 , in which dependencies were not
   3 ! correctly handled for the assignments below and, when this was fixed,
   4 ! the last two ICEd on trying to create the temorary.
   5 !
   6 ! Contributed by Joost VandeVondele <jv244@cam.ac.uk>
   7 !              Dominique d'Humieres <dominiq@lps.ens.fr>
   8 !                   and Paul Thomas <pault@gcc.gnu.org>
   9 !
  10   character(len=1) :: a = "1"
  11   character(len=1) :: b(4) = (/"1","2","3","4"/), c(4)
  12   c = b
  13   forall(i=1:1) a(i:i) = a(i:i)         ! This was the original PR31217
  14   forall(i=1:1) b(i:i) = b(i:i)         ! The rest were found to be broken
  15   forall(i=1:1) b(:)(i:i) = b(:)(i:i)
  16   forall(i=1:1) b(1:3)(i:i) = b(2:4)(i:i)
  17   if (any (b .ne. (/"2","3","4","4"/))) STOP 1
  18   b = c
  19   forall(i=1:1) b(2:4)(i:i) = b(1:3)(i:i)
  20   if (any (b .ne. (/"1","1","2","3"/))) STOP 2
  21   b = c
  22   do i = 1, 1
  23     b(2:4)(i:i) = b(1:3)(i:i)           ! This was PR33811 and Paul's bit
  24   end do
  25   if (any (b .ne. (/"1","1","2","3"/))) STOP 3
  26   call foo
  27 contains
  28   subroutine foo
  29     character(LEN=12) :: a(2) = "123456789012"
  30     character(LEN=12) :: b = "123456789012"
  31 ! These are Dominique's
  32     forall (i = 3:10) a(:)(i:i+2) = a(:)(i-2:i)
  33     IF (a(1) .ne. "121234567890") STOP 4
  34     forall (i = 3:10) a(2)(i:i+2) = a(1)(i-2:i)
  35     IF (a(2) .ne. "121212345678") STOP 5
  36     forall (i = 3:10) b(i:i+2) = b(i-2:i)
  37     IF (b .ne. "121234567890") STOP 6
  38   end subroutine
  39 end
  40