Dear all,

this patch is actually only a followup fix to generate the proper name
of an array reference in derived-type components for the runtime error
message generated for the bounds-checking code.  Without the proper
part ref, not only a user may get confused: I was, too...

The testcase is compile-only, as it is only important to check the
strings used in the error messages.

Regtested on x86_64-pc-linux-gnu.  OK for mainline?

Thanks,
Harald