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Fix _ZendTestFiber failed assertion when started twice #16555

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Fix _ZendTestFiber failed assertion when started twice #16555

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9 changes: 8 additions & 1 deletion ext/zend_test/fiber.c
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Original file line number Diff line number Diff line change
Expand Up @@ -247,7 +247,14 @@ static ZEND_METHOD(_ZendTestFiber, start)
Z_PARAM_VARIADIC_WITH_NAMED(params, param_count, named_params);
ZEND_PARSE_PARAMETERS_END();

ZEND_ASSERT(fiber->context.status == ZEND_FIBER_STATUS_INIT);
if (fiber->context.status != ZEND_FIBER_STATUS_INIT) {
zend_string *fiber_error_name = ZSTR_INIT_LITERAL("fibererror", false);
zend_class_entry *fiber_error_ce = zend_lookup_class_ex(fiber_error_name, fiber_error_name, 0);
ZEND_ASSERT(fiber_error_ce);
zend_throw_error(fiber_error_ce, "Cannot start a fiber that has already been started");
zend_string_release_ex(fiber_error_name, false);
RETURN_THROWS();
}

if (fiber->previous != NULL) {
zend_throw_error(NULL, "Cannot start a fiber that is the target of another fiber");
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19 changes: 19 additions & 0 deletions ext/zend_test/tests/gh16496.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
--TEST--
GH-16496: _ZendTestFiber failed assertion when started twice
--EXTENSIONS--
zend_test
--FILE--
<?php

$test = new _ZendTestFiber(function () {});
$test->start();

try {
$test->start();
} catch(FiberError $e) {
echo $e->getMessage(), "\n";
}

?>
--EXPECT--
Cannot start a fiber that has already been started
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