Improve __builtin_constant_p used outside of functions

[Richard Henderson]

On Fri, Aug 03, 2001 at 01:41:16PM -0400, Zack Weinberg wrote:
> 	* builtins.c (fold_builtin_constant_p): Return integer_zero_node
> 	for complex expressions when cfun == 0.
> 	* gcc.dg/bconstp-1.c: New test.

You need to update extend.texi as well.  Ok if you do that.


r~