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Avoid allocating temporaries on the call frame for property hook trampolines #16287

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Merged
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Mar 25, 2025
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Avoid allocating temporaries on the call frame for property hook trampolines #16287

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3 changes: 3 additions & 0 deletions Zend/zend_object_handlers.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1707,6 +1707,9 @@ ZEND_API zend_function *zend_get_property_hook_trampoline(
func = (zend_function *)(uintptr_t)ecalloc(1, sizeof(zend_internal_function));
}
func->type = ZEND_INTERNAL_FUNCTION;
/* This trampoline does not use the call_trampoline_op, so it won't reuse the call frame,
* which means we don't even need to reserve a temporary for observers. */
func->common.T = 0;
func->common.arg_flags[0] = 0;
func->common.arg_flags[1] = 0;
func->common.arg_flags[2] = 0;
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