[Bug 20474] Wine can't be built with GCC in C99 mode

https://bugs.winehq.org/show_bug.cgi?id=20474

--- Comment #18 from Austin English  ---
(In reply to Saulius K. from comment #17)
> (In reply to André H. from comment #16)
> > I think we are supposed to use a gnu standard, most popular software won't
> > work with pure c standard afaik.
> > Last time I tested gnu89, gnu99 and gnu11 worked.
>
> André, how does using gnu standard relate to this statement, please?
> https://wiki.winehq.org/Code_Hygiene#Constants_as_Character_Arrays

I wouldn't consider that page up to date or reliable. For instance, it mentions
D_FORTIFY_SOURCE, which configure explicitly disables (and has for quiet some
time).