Bug #79600 [Csd]: Regression in 7.4.6 when yielding an array based generator

Edit report at https://bugs.php.net/bug.php?id=79600&edit=1 ID: 79600 Updated by: nikic@php.net Reported by: pvandommelen at gmail dot com Summary: Regression in 7.4.6 when yielding an array based generator Status: Closed Type: Bug Package: *General Issues PHP Version: 7.4.6 Assigned To: nikic Block user comment: N Private report: N New Comment: @rob dot bast at gmail dot com: Yes, it will be fixed in the next patch release. Sorry for the trouble, it was a really stupid mistake, and somehow we did not have test coverage for such a simple case. Previous Comments: ------------------------------------------------------------------------ [2020-05-19 10:05:10] rob dot bast at gmail dot com Does closed mean this will be fixed in the next patch release? Cause I am also running into this issue with 7.4.6 at a client. We pinned our version to 7.4.5 for now. ------------------------------------------------------------------------ [2020-05-15 09:05:19] nikic@php.net Automatic comment on behalf of nikita.ppv@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=d87b0685b5ec4e5df6d732414653f343bc44af8c Log: Fixed bug #79600 ------------------------------------------------------------------------ [2020-05-15 08:57:57] nikic@php.net Very likely caused by the fix for bug #78434. ------------------------------------------------------------------------ [2020-05-15 08:47:28] pvandommelen at gmail dot com Description: ------------ Also see the test script. When yielding a generator which is based on an array, the first element is returned twice. Test script: --------------- // https://3v4l.org/gYB16 function createArrayGenerator() { yield from [ 1, 2, ]; } function createGeneratorFromArrayGenerator() { yield from createArrayGenerator(); } foreach (createGeneratorFromArrayGenerator() as $value) { echo $value; } Expected result: ---------------- The entries 1 and 2 Actual result: -------------- The first entry twice, then the second ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79600&edit=1