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diff --git a/gcc/testsuite/gfortran.dg/der_io_4.f90 b/gcc/testsuite/gfortran.dg/der_io_4.f90
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+! { dg-do compile }
+! PR41859 ICE on invalid expression involving DT with pointer components in I/O.
+! The parens around p below are significant.
+ TYPE :: ptype
+ character, pointer, dimension(:) :: x => null()
+ END TYPE
+ TYPE(ptype) :: p
+ print *, ((((p)))) ! { dg-error "Data transfer element" }
+end