1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/array_constructor_6.f90 b/gcc/testsuite/gfortran.dg/array_constructor_6.f90
new file mode 100644
index 000000000..177fb20ee
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/array_constructor_6.f90
@@ -0,0 +1,25 @@
+! PR 12840.  Make sure that array constructors can be used to determine
+! the bounds of a scalarization loop.
+! { dg-do run }
+program main
+  implicit none
+  call build (11)
+contains
+  subroutine build (order)
+    integer :: order, i
+
+    call test (order, (/ (i * 2, i = 1, order) /))
+    call test (17, (/ (i * 2, i = 1, 17) /))
+    call test (5, (/ 2, 4, 6, 8, 10 /))
+  end subroutine build
+
+  subroutine test (order, values)
+    integer, dimension (:) :: values
+    integer :: order, i
+
+    if (size (values, dim = 1) .ne. order) call abort
+    do i = 1, order
+      if (values (i) .ne. i * 2) call abort
+    end do
+  end subroutine test
+end program main