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Fix GH-7757: Multi-inherited final constant causes fatal error #7767

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Fix GH-7757: Multi-inherited final constant causes fatal error #7767

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18 changes: 18 additions & 0 deletions Zend/tests/constants/final_constants/final_const13.phpt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
--TEST--
Bug GH-7757 (Multi-inherited final constant causes fatal error)
--FILE--
<?php
interface EntityInterface {
final public const TEST = 'this';
}

interface KeyInterface extends EntityInterface {
}

interface StringableInterface extends EntityInterface {
}

class SomeTestClass implements KeyInterface, StringableInterface {
}
?>
--EXPECT--
2 changes: 1 addition & 1 deletion Zend/zend_inheritance.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1605,7 +1605,7 @@ static bool do_inherit_constant_check(
}

zend_class_constant *old_constant = Z_PTR_P(zv);
if ((ZEND_CLASS_CONST_FLAGS(parent_constant) & ZEND_ACC_FINAL)) {
if (parent_constant->ce != old_constant->ce && (ZEND_CLASS_CONST_FLAGS(parent_constant) & ZEND_ACC_FINAL)) {
zend_error_noreturn(E_COMPILE_ERROR, "%s::%s cannot override final constant %s::%s",
ZSTR_VAL(old_constant->ce->name), ZSTR_VAL(name),
ZSTR_VAL(parent_constant->ce->name), ZSTR_VAL(name)
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