[RFC] _FORTIFY_SOURCE strictness

[Paul Eggert]

On 4/7/22 23:02, Siddhesh Poyarekar wrote:
> Hmm, I think I conflated it with something other str* function.  You're 
> right, strncpy probably doesn't fall into this category.

Ouch, I made the same mistake.

As for wcrtomb, unfortunately the standard's wording appears to allow 
you to pass an output buffer smaller than MB_CUR_MAX if you know that 
the multibyte character will fit into the smaller buffer. So I guess 
this is an example of a function where __FORTIFY_LEVEL > 2 doesn't 
conform to the standard.

I don't know whether the standard's authors intended this.