--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gfortran.dg/spec_expr_6.f90	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,50 @@
+! { dg-do compile }
+!
+! PR fortran/43591
+!
+! Pureness check for TPB/PPC in specification expressions
+!
+! Based on a test case of Thorsten Ohl
+!
+!
+
+module m
+  implicit none
+  type t
+     procedure(p1_type), nopass, pointer :: p1 => NULL()
+  contains
+     procedure, nopass :: tbp => p1_type
+  end type t
+contains
+  subroutine proc (t1, t2)
+    type(t), intent(in) :: t1, t2
+    integer, dimension(t1%p1(), t2%tbp()) :: table
+  end subroutine proc
+  pure function p1_type()
+   integer :: p1_type
+   p1_type = 42
+  end function p1_type
+  pure subroutine p(t1)
+    type(t), intent(inout) :: t1
+    integer :: a(t1%p1())
+  end subroutine p
+end module m
+
+module m2
+  implicit none
+  type t
+     procedure(p1_type), nopass, pointer :: p1 => NULL()
+  contains
+     procedure, nopass :: tbp => p1_type
+  end type t
+contains
+  subroutine proc (t1, t2)
+    type(t), intent(in) :: t1, t2
+    integer, dimension(t1%p1()) :: table1 ! { dg-error "must be PURE" }
+    integer, dimension(t2%tbp()) :: table2 ! { dg-error "must be PURE" }
+  end subroutine proc
+  function p1_type()
+    integer :: p1_type
+    p1_type = 42
+  end function p1_type
+end module m2