Gcc builtin review: strcpy, stpcpy, strcat, stpcat?

[Joseph Myers]

On Mon, 25 May 2015, Ondøej Bílka wrote:

> You should expoit that stpcpy returns end of string so gcc should
> replace
> 
> strcpy (x,y)
> return strlen (x)
> 
> with 
> 
> return stpcpy (x,y) - x

Subject to namespace issues (we could agree that __stpcpy is a stable ABI 
- won't become a compat symbol - so that GCC can safely generate calls to 
it).

-- 
Joseph S. Myers
joseph@codesourcery.com