{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"if"}]}
                if !self.in_mutable_memory(val) {
            if !zst && !val.layout.ty.is_freeze(*self.ecx.tcx, self.ecx.typing_env) {
                    throw_validation_failure!(self.path, UnsafeCellInImmutable);