gcc/testsuite/gfortran.dg/array_constructor_11.f90

   1 ! Like array_constructor_6.f90, but check iterators with non-default stride,
   2 ! including combinations which lead to zero-length vectors.
   3 ! { dg-do run }
   4 ! { dg-options "-Wzerotrip" }
   5 program main
   6   implicit none
   7   call build (77)
   8 contains
   9   subroutine build (order)
  10     integer :: order, i, j
  11
  12     call test (1, 11, 3, (/ (i, i = 1, 11, 3) /))
  13     call test (3, 20, 2, (/ (i, i = 3, 20, 2) /))
  14     call test (4, 0, 11, (/ (i, i = 4, 0, 11) /)) ! { dg-warning "will be executed zero times" }
  15
  16     call test (110, 10, -3,  (/ (i, i = 110, 10, -3) /))
  17     call test (200, 20, -12, (/ (i, i = 200, 20, -12) /))
  18     call test (29, 30, -6,   (/ (i, i = 29, 30, -6) /)) ! { dg-warning "will be executed zero times" }
  19
  20     call test (1, order, 3,  (/ (i, i = 1, order, 3) /))
  21     call test (order, 1, -3, (/ (i, i = order, 1, -3) /))
  22
  23     ! Triggers compile-time iterator calculations in trans-array.c
  24     call test (1, 1000, 2,   (/ (i, i = 1, 1000, 2),   (i, i = order, 0, 1) /))
  25     call test (1, 0, 3,      (/ (i, i = 1, 0, 3),      (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
  26     call test (1, 2000, -5,  (/ (i, i = 1, 2000, -5),  (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
  27     call test (3000, 99, 4,  (/ (i, i = 3000, 99, 4),  (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
  28     call test (400, 77, -39, (/ (i, i = 400, 77, -39), (i, i = order, 0, 1) /))
  29
  30     do j = -10, 10
  31       call test (order + j, order, 5,  (/ (i, i = order + j, order, 5) /))
  32       call test (order + j, order, -5, (/ (i, i = order + j, order, -5) /))
  33     end do
  34
  35   end subroutine build
  36
  37   subroutine test (from, to, step, values)
  38     integer, dimension (:) :: values
  39     integer :: from, to, step, last, i
  40
  41     last = 0
  42     do i = from, to, step
  43       last = last + 1
  44       if (values (last) .ne. i) STOP 1
  45     end do
  46     if (size (values, dim = 1) .ne. last) STOP 2
  47   end subroutine test
  48 end program main