gcc/testsuite/gfortran.dg/reshape.f90

   1 ! { dg-do run }
   2 ! This tests a few reshape PRs.
   3 program resh
   4   implicit none
   5   real, dimension (2,3) :: a,c
   6   real, dimension (12) :: b
   7   type foo
   8     real :: r
   9   end type foo
  10   type(foo), dimension (2,3) :: ar
  11   type(foo), dimension (12) :: br
  12
  13   character (len=80) line1, line2, line3
  14   integer :: i
  15
  16   ! PR 21108:  This used to give undefined results.
  17   b = (/(i,i=1,12)/)
  18   a = reshape(b(1:12:2),shape(a),order=(/2,1/))
  19   c = reshape(b(1:12:2),shape(a),order=(/2,1/))
  20   if (any (a /= c)) STOP 1
  21
  22   ! Test generic reshape
  23   br%r = b
  24   ar = reshape(br(1:12:2),shape(a),order=(/2,1/))
  25   if (any (ar%r /= a)) STOP 2
  26
  27   ! Test callee-allocated memory with a write statement
  28   write (line1,'(6F8.3)') reshape(b(1:12:2),shape(a),order=(/2,1/))
  29   write (line2,'(6F8.3)') a
  30   if (line1 /= line2 ) STOP 3
  31   write (line3,'(6F8.3)') reshape(br(1:12:2),shape(ar),order=(/2,1/))
  32   if (line1 /= line3 ) STOP 4
  33 end