1 files changed, 47 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/array_constructor_11.f90 b/gcc/testsuite/gfortran.dg/array_constructor_11.f90
new file mode 100644
index 000000000..bb9f0dddb
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/array_constructor_11.f90
@@ -0,0 +1,47 @@
+! Like array_constructor_6.f90, but check iterators with non-default stride,
+! including combinations which lead to zero-length vectors.
+! { dg-do run }
+program main
+  implicit none
+  call build (77)
+contains
+  subroutine build (order)
+    integer :: order, i, j
+
+    call test (1, 11, 3, (/ (i, i = 1, 11, 3) /))
+    call test (3, 20, 2, (/ (i, i = 3, 20, 2) /))
+    call test (4, 0, 11, (/ (i, i = 4, 0, 11) /)) ! { dg-warning "will be executed zero times" }
+
+    call test (110, 10, -3,  (/ (i, i = 110, 10, -3) /))
+    call test (200, 20, -12, (/ (i, i = 200, 20, -12) /))
+    call test (29, 30, -6,   (/ (i, i = 29, 30, -6) /)) ! { dg-warning "will be executed zero times" }
+
+    call test (1, order, 3,  (/ (i, i = 1, order, 3) /))
+    call test (order, 1, -3, (/ (i, i = order, 1, -3) /))
+
+    ! Triggers compile-time iterator calculations in trans-array.c
+    call test (1, 1000, 2,   (/ (i, i = 1, 1000, 2),   (i, i = order, 0, 1) /))
+    call test (1, 0, 3,      (/ (i, i = 1, 0, 3),      (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
+    call test (1, 2000, -5,  (/ (i, i = 1, 2000, -5),  (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
+    call test (3000, 99, 4,  (/ (i, i = 3000, 99, 4),  (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
+    call test (400, 77, -39, (/ (i, i = 400, 77, -39), (i, i = order, 0, 1) /))
+
+    do j = -10, 10
+      call test (order + j, order, 5,  (/ (i, i = order + j, order, 5) /))
+      call test (order + j, order, -5, (/ (i, i = order + j, order, -5) /))
+    end do
+
+  end subroutine build
+
+  subroutine test (from, to, step, values)
+    integer, dimension (:) :: values
+    integer :: from, to, step, last, i
+
+    last = 0
+    do i = from, to, step
+      last = last + 1
+      if (values (last) .ne. i) call abort
+    end do
+    if (size (values, dim = 1) .ne. last) call abort
+  end subroutine test
+end program main