Patch to clean up build_array_ref

[Kai Henningsen]

joseph@codesourcery.com (Joseph S. Myers)  wrote on 20.11.04 in <Pine.LNX.4.61.0411202031490.17088@digraph.polyomino.org.uk>:

> This patch cleans up build_array_ref in the C front end.  This
> improves diagnostics and their consistency in various cases, ensuring
> that x[y] and y[x] are handled identically except that for some reason
> -Wchar-subscripts is designed only to warn for the char in one place.

That looks like a bug to me - should that really be preserved? Why?

MfG Kai