dl("mysqli") fails when OPcache is enabled #8508
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Closing in favor of #9196, which describes the root cause. |
cmb69
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Sep 16, 2022
As described in php#8508, if OPcache is enabled, ext/mysqli can't be dl()'d; we work around that by loading the extension on startup.
cmb69
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Sep 29, 2024
Prior to running the tests, the test runner checks for all generally available extensions; it does this by scanning the `extension_dir` for files matching the typical extension pattern, but verifies that the file is actually a PHP extension by calling `dl()`. However, `dl()` has known issues[1]. On Windows CI we always get an ugly "zend_mm_heap corrupted" message, and we even can't `dl()` ext/mysql when OPcache is enabled[2]. So we better avoid the double-check with `dl()`, which is unlikely to be necessary anyway. [1] <php#9196> [2] <php#8508>
cmb69
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Oct 3, 2024
Prior to running the tests, the test runner checks for all generally available extensions; it does this by scanning the `extension_dir` for files matching the typical extension pattern, but verifies that the file is actually a PHP extension by calling `dl()`. However, `dl()` has known issues[1]. On Windows CI we always get an ugly "zend_mm_heap corrupted" message, and we even can't `dl()` ext/mysql when OPcache is enabled[2]. So we better avoid the double-check with `dl()`, which is unlikely to be necessary anyway. [1] <#9196> [2] <#8508>
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Description
The following code:
Resulted in this output:
But I expected this output instead:
The problem is
mysqli_exception::$sqlstate; its value "00000"won'twould be interned, and so the respective checkphp-src/Zend/zend_API.c
Lines 3814 to 3816 in 95f5f9d
fails, causing PHP to bail out.
This is particularly an issue regarding the tests, because as of PHP 8.1.0, run-tests.php tries to figure out which dynamic extension can be loaded to gather the
$exts_to_tests; however, due to this issue the list is not complete, so when OPcache is enabled, about 2.000 tests are not executed on AppVeyor CI.PHP Version
PHP-8.0
Operating System
Windows
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