[lto] Fix bootstrap failure

[Joseph S. Myers]

On Fri, 5 Sep 2008, Gerald Pfeifer wrote:

> Any ideas how we could address this in a better way (in general, not for
> this specific example necessarily)?

Use the warning pragmas to disable these warnings on particular source 
lines (fixing them to be able to do so if they can't do that yet)?  These 
warnings are ones that aren't readily avoidable in all cases (and so don't 
belong in -Wall).

-- 
Joseph S. Myers
joseph@codesourcery.com