On 09/12/18 12:41, Markus Wichmann wrote:
> Besides, you're opening a very scary door there: The C standard's
> chapter 7 contains a whole lot of UB in the library, and a compiler
> writer could now say: Since it is undefined, obviously it is never going
> to happen (and if it does, it is your own fault), so I can write the
> optimizer to assume all arguments to functions are such that UB does not
> occur.


Happy early Hallowe'en:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87096

--arw


-- 
A. Wilcox (awilfox)
Project Lead, Adélie Linux
https://www.adelielinux.org