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+! { dg-do compile }
+! { dg-options "-std=legacy" }
+!
+! Test for the fix to PR24409 - the name clash between the module
+! name and the interface formal argument would cause an ICE.
+!
+! Contributed by Paul Thomas  <pault@gcc.gnu.org>
+!
+module string 
+  interface
+    function  lc(string )
+      character(len=*), intent(in)  :: string 
+      character(len=len(string ))    :: lc
+    end function lc
+  end interface
+end module string
+
+module serial
+  use string
+end module serial
+
+  use serial
+  use string
+  character*15  :: buffer  
+  buffer = lc ("Have a Nice DAY")
+  end
+
+! { dg-final { cleanup-modules "string serial" } }