--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gfortran.dg/intrinsic_shadow_1.f03	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,55 @@
+! { dg-do compile }
+! { dg-options "-std=f2003 -Wintrinsic-shadow" }
+
+! PR fortran/33141
+! Check that the expected warnings are emitted if a user-procedure has the same
+! name as an intrinsic, but only if it is matched by the current -std=*.
+
+MODULE testmod
+  IMPLICIT NONE
+
+CONTAINS
+
+  ! ASIN is an intrinsic
+  REAL FUNCTION asin (arg) ! { dg-warning "shadow the intrinsic" }
+    IMPLICIT NONE
+    REAL :: arg
+  END FUNCTION asin
+
+  ! ASINH is one but not in F2003
+  REAL FUNCTION asinh (arg) ! { dg-bogus "shadow the intrinsic" }
+    IMPLICIT NONE
+    REAL :: arg
+  END FUNCTION asinh
+
+END MODULE testmod
+
+! ACOS is an intrinsic
+REAL FUNCTION acos (arg) ! { dg-warning "of an intrinsic" }
+  IMPLICIT NONE
+  REAL :: arg
+END FUNCTION acos
+
+! ACOSH not for F2003
+REAL FUNCTION acosh (arg) ! { dg-bogus "of an intrinsic" }
+  IMPLICIT NONE
+  REAL :: arg
+END FUNCTION acosh
+
+! A subroutine with the same name as an intrinsic subroutine
+SUBROUTINE random_number (arg) ! { dg-warning "of an intrinsic" }
+  IMPLICIT NONE
+  REAL, INTENT(OUT) :: arg
+END SUBROUTINE random_number
+
+! But a subroutine with the name of an intrinsic function is ok.
+SUBROUTINE atan (arg) ! { dg-bogus "of an intrinsic" }
+  IMPLICIT NONE
+  REAL :: arg
+END SUBROUTINE atan
+
+! As should be a function with the name of an intrinsic subroutine.
+REAL FUNCTION random_seed () ! { dg-bogus "of an intrinsic" }
+END FUNCTION random_seed
+
+! We do only compile, so no main program needed.