1 files changed, 84 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/dynamic_dispatch_1.f03 b/gcc/testsuite/gfortran.dg/dynamic_dispatch_1.f03
new file mode 100644
index 00000000000..4854b0ff08d
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/dynamic_dispatch_1.f03
@@ -0,0 +1,84 @@
+! { dg-do run }
+! Tests dynamic dispatch of class functions.
+!
+! Contributed by Paul Thomas <pault@gcc.gnu.org>
+!
+module m
+  type :: t1
+    integer :: i = 42
+    procedure(make_real), pointer :: ptr
+  contains
+    procedure, pass :: real => make_real
+    procedure, pass :: make_integer
+    procedure, pass :: prod => i_m_j
+    generic, public :: extract => real, make_integer
+    generic, public :: base_extract => real, make_integer
+  end type t1
+
+  type, extends(t1) :: t2
+    integer :: j = 99
+  contains
+    procedure, pass :: real => make_real2
+    procedure, pass :: make_integer_2
+    procedure, pass :: prod => i_m_j_2
+    generic, public :: extract => real, make_integer_2
+  end type t2
+contains
+  real function make_real (arg)
+    class(t1), intent(in) :: arg
+    make_real = real (arg%i)
+  end function make_real
+
+  real function make_real2 (arg)
+    class(t2), intent(in) :: arg
+    make_real2 = real (arg%j)
+  end function make_real2
+
+  integer function make_integer (arg, arg2)
+    class(t1), intent(in) :: arg
+    integer :: arg2
+    make_integer = arg%i * arg2
+  end function make_integer
+
+  integer function make_integer_2 (arg, arg2)
+    class(t2), intent(in) :: arg
+    integer :: arg2
+    make_integer_2 = arg%j * arg2
+  end function make_integer_2
+
+  integer function i_m_j (arg)
+    class(t1), intent(in) :: arg
+        i_m_j = arg%i
+  end function i_m_j
+
+  integer function i_m_j_2 (arg)
+    class(t2), intent(in) :: arg
+        i_m_j_2 = arg%j
+  end function i_m_j_2
+end module m
+
+  use m
+  type, extends(t1) :: l1
+    character(16) :: chr
+  end type l1
+  class(t1), pointer :: a !=> NULL()
+  type(t1), target :: b
+  type(t2), target :: c
+  type(l1), target :: d
+  a => b                                   ! declared type
+  if (a%real() .ne. real (42)) call abort
+  if (a%prod() .ne. 42) call abort
+  if (a%extract (2) .ne. 84) call abort
+  if (a%base_extract (2) .ne. 84) call abort
+  a => c                                   ! extension in module
+  if (a%real() .ne. real (99)) call abort
+  if (a%prod() .ne. 99) call abort
+  if (a%extract (3) .ne. 297) call abort
+  if (a%base_extract (3) .ne. 126) call abort
+  a => d                                   ! extension in main
+  if (a%real() .ne. real (42)) call abort
+  if (a%prod() .ne. 42) call abort
+  if (a%extract (4) .ne. 168) call abort
+  if (a%base_extract (4) .ne. 168) call abort
+end
+! { dg-final { cleanup-modules "m" } }