On Sun, Jul 23, 2017 at 3:55 AM, Sara Golemon <poll...@php.net> wrote:
> On Sat, Jul 22, 2017 at 12:48 PM, Nikita Popov <nikita....@gmail.com> > wrote: > > What's out current state regarding ABI? I've recently done some work on > > making mbstring slightly less abysmally slow, but landed the changes on > > master only, because this included ABI breaks in mbfl/mbstring APIs and > > globals. Is this something I can land in PHP-7.2, or is it closed to > > extension ABI changes? > > > During beta I'm willing to tolerate some ABI breaks for high-value > things, but while mbstring performance is inarguably a good thing, > stability is an even better thing. Anatol mentioned concern about > stability, ergo I'm inclined to defer these improvements till 7.3. > > -Sara > What Anatol is probably referring to here is that next to the performance improvements, the mbstring extension has also been migrated to use size_t instead of int lengths. This is something we originally overlooked during the size_t port in PHP 7. This is a major change and its easy to overlook something, so the concern for stability is well justified. Conversely, this does also fix a range of length overflow related bugs (I have manually verified this on a sample of related bug reports). Nikita
