needless deep recursion in gt-c-decl.h

[Per Bothner]

Geoff Keating wrote:
> It means you need a more complicated design than the one you
> presented, because in
> 
> while (! x is marked)
> {
>   mark x;
>   recursively mark objects pointed to by x, but don't look at TREE_CHAIN(x);
>   x = TREE_CHAIN (x);
> }
> 
> the loop rarely iterates more than once, since very often TREE_CHAIN(x)
> will be marked indirectly in the body of the loop.  You need something
> like [two loops]

Are you saying that the single loop is incorrect, or that it is
inefficient?  I don't understand why either would be the case.
--
	--Per Bothner
per@bothner.com   http://www.bothner.com/per/