1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/large_integer_kind_1.f90 b/gcc/testsuite/gfortran.dg/large_integer_kind_1.f90
new file mode 100644
index 000000000..2f272db92
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/large_integer_kind_1.f90
@@ -0,0 +1,40 @@
+! { dg-do run }
+! { dg-require-effective-target fortran_large_int }
+
+module testmod
+  integer,parameter :: k = selected_int_kind (range (0_8) + 1)
+contains
+  subroutine testoutput (a,b,length,f)
+    integer(kind=k),intent(in) :: a
+    integer(kind=8),intent(in) ::  b
+    integer,intent(in) :: length
+    character(len=*),intent(in) :: f
+
+    character(len=length) :: ca
+    character(len=length) :: cb
+
+    write (ca,f) a
+    write (cb,f) b
+    if (ca /= cb) call abort
+  end subroutine testoutput
+end module testmod
+
+
+! Testing I/O of large integer kinds (larger than kind=8)
+program test
+  use testmod
+  implicit none
+
+  integer(kind=k) :: x
+  character(len=50) :: c1, c2
+
+  call testoutput (0_k,0_8,50,'(I50)')
+  call testoutput (1_k,1_8,50,'(I50)')
+  call testoutput (-1_k,-1_8,50,'(I50)')
+  x = huge(0_8)
+  call testoutput (x,huge(0_8),50,'(I50)')
+  x = -huge(0_8)
+  call testoutput (x,-huge(0_8),50,'(I50)')
+end program test
+
+! { dg-final { cleanup-modules "testmod" } }