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Fix inference of COPY_TMP #12619

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Fix inference of COPY_TMP #12619

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5 changes: 4 additions & 1 deletion Zend/Optimizer/zend_inference.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2697,7 +2697,10 @@ static zend_always_inline zend_result _zend_update_type_info(
UPDATE_SSA_TYPE(tmp, ssa_op->op1_def);
COPY_SSA_OBJ_TYPE(ssa_op->op1_use, ssa_op->op1_def);
}
tmp = t1 & ~(MAY_BE_UNDEF|MAY_BE_REF);
tmp = t1 & ~MAY_BE_UNDEF;
if (opline->opcode != ZEND_COPY_TMP || opline->op1_type != IS_VAR) {
tmp &= ~MAY_BE_REF;
}
if (t1 & MAY_BE_UNDEF) {
tmp |= MAY_BE_NULL;
}
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1 change: 1 addition & 0 deletions Zend/zend_vm_def.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9516,6 +9516,7 @@ ZEND_VM_HANDLER(172, ZEND_FUNC_GET_ARGS, UNUSED|CONST, UNUSED)
ZEND_VM_NEXT_OPCODE();
}

/* Contrary to what its name indicates, ZEND_COPY_TMP may receive and define references. */
ZEND_VM_HANDLER(167, ZEND_COPY_TMP, TMPVAR, UNUSED)
{
USE_OPLINE
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2 changes: 2 additions & 0 deletions Zend/zend_vm_execute.h
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