gcc warning

[Joe Buck]

I wrote:
> > If you're going to check the string length for standards
> > conformance, you should use the limit specified in the standard
> > being checked against.

Mike Stump writes:
> There isn't a limit.

OK, "limit" is not the ideal word.  The idea of this warning seems to
be to warn the user if a string limit exceeds the required minimum
supported length according to the standard.  I can't think of a short
way to describe this: "minimum upper bound", perhaps?