[PATCH][C][C++] Move (some) error handling from builtins.c to the frontends

[Joseph S. Myers]

On Wed, 23 Apr 2008, Richard Guenther wrote:

> This moves type and argument count checking for type-generic math builtins
> from builtins.c (at fold time) to a helper in c-common which is called
> at the time the function call is built.
> 
> Originally this patch was motivated because __builtin_constant_p accepts
> any number of arguments but only expects / processes one.  This is now
> verified in the same place.
> 
> This function may be also used to properly implement type-generic math
> which requires promotion and possibly enables more error handling to be
> moved from builtins.c to the frontends (at least those parts that do
> not depend on constant propagation to be done before).
> 
> Bootstrapped and tested on x86_64-unknown-linux-gnu -- does this look
> sensible or do we not care?

It looks sensible to me in C terms.

-- 
Joseph S. Myers
joseph@codesourcery.com