Non-reentrant code generated by C compiler

[ado at elsie.UUCP]

> How about changing the lint message from "nonportable return of structure"
> to "structure return is nonreentrant".  There is nothing nonportable about
> struct-valued functions.

Actually, with all the muttering in this group of late on how to redo struct-
valued returns, returning a structure probably IS nonportable--sometimes it
will be reentrant, sometimes not.

And, of course, return of structures was absent before the advent of Version 7--
so struct-valued functions are not portable to Version 6 and its clones.
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