Bug #78434 [Ver->Csd]: Generator yields no items after valid() call

Edit report at https://bugs.php.net/bug.php?id=78434&edit=1 ID: 78434 Updated by: nikic@php.net Reported by: enumag at gmail dot com Summary: Generator yields no items after valid() call -Status: Verified +Status: Closed Type: Bug Package: *General Issues Operating System: irrelevant PHP Version: 7.3.11 Block user comment: N Private report: N New Comment: Automatic comment on behalf of nikita.ppv@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=823a956855c1f38ed8ee888bf248917e28d40314 Log: Fixed bug #78434 Previous Comments: ------------------------------------------------------------------------ [2020-04-03 10:10:11] nikic@php.net Candidate patch at https://github.com/php/php-src/pull/5344. Very much not sure this is right. ------------------------------------------------------------------------ [2020-04-02 15:03:41] nikic@php.net It looks like the difference in behavior is because the first yield from runs with DO_INIT flag set, which prevents the initial advance. ------------------------------------------------------------------------ [2020-04-02 09:48:37] enumag at gmail dot com Bump. Just ran into this again, it is really bothering me that I can't rely on Generators to work correctly. Can you please fix this? ------------------------------------------------------------------------ [2019-08-23 15:53:19] nikic@php.net Sorry, I missed the different behavior for the two yield froms... something is definitely broken here. ------------------------------------------------------------------------ [2019-08-21 13:28:35] enumag at gmail dot com As far as I know calling Generator::rewind() is alright until next() is called for the first time. Which means that your argument whether or not should yield from call rewind() is not relevant here - the result would be the same regardless. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=78434 -- Edit this bug report at https://bugs.php.net/bug.php?id=78434&edit=1