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JIT: Disable recursive call optimization for VM without global register variables

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A tail-call to VM handler from recursively called function may lead to
pass control to incorrect stack frame.
This commit is contained in:
Dmitry Stogov
2021-09-21 14:30:56 +03:00
parent 051036330a
commit 48d050ef72
1 changed files with 1 additions and 1 deletions
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ext/opcache/jit/zend_jit_x86.dasc
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@@ -10082,7 +10082,7 @@ static int zend_jit_do_fcall(dasm_State **Dst, const zend_op *opline, const zend
}
}
if (!trace && op_array == &func->op_array
if (GCC_GLOBAL_REGS && !trace && op_array == &func->op_array
&& num_args >= op_array->required_num_args) {
/* recursive call */
if (ZEND_OBSERVER_ENABLED) {