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Allow filtered streams to be casted as fd for select

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This removes the artificial limitation that is not necessary. The fact
that some streams can have some data buffered is not a problem because
the similar situation is already present for OpenSSL streams where
OpenSSL can internally buffer data for the unprocessed part of the
record.

Closes GH-20540
This commit is contained in:
Jakub Zelenka
2025-11-20 17:18:35 +01:00
parent 241e43f2d8
commit e49be5f8e2
5 changed files with 94 additions and 1 deletions
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2
main/streams/cast.c
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@@ -297,7 +297,7 @@ PHPAPI zend_result _php_stream_cast(php_stream *stream, int castas, void **ret,
}
}
if (php_stream_is_filtered(stream)) {
if (php_stream_is_filtered(stream) && castas != PHP_STREAM_AS_FD_FOR_SELECT) {
if (show_err) {
php_error_docref(NULL, E_WARNING, "Cannot cast a filtered stream on this system");
}