[Bug c/48885] missed optimization with restrict qualifier?

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48885

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-05 14:50:48 UTC ---
Because the standard was interpreted that way when implementing restrict
support.
And also because otherwise pointers based on a restrict pointer cannot be
reliably tracked.