Fix oss-fuzz #71382 #15854
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Fix oss-fuzz #71382 #15854
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ZVAL_ARR() does not support immutable arrays as it incorrectly sets the IS_TYPE_REFCOUNTED flag. Using zend_array_new(0) instead, as it's a rare case.
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The return value of
zho_build_properties_ex()is passed toZVAL_ARR(), which sets theIS_TYPE_REFCOUNTEDflag. Returning&zend_emtpy_arraywill crash later when trying to dtor the zval.I'm fixing this by returning
zend_new_array(0)instead of&zend_empty_array.An alternative was to make
ZVAL_ARR()aware of immutable arrays, likeZVAL_STR()is with interned strings, but I found no other problematic cases.