Hi, > But I really can't see the breaking change, could you please point it out for > me?
struct ubus_client changed its layout. > The second question is the change of the library name from 'libubus.so' to > 'libubus.so.20210603'. Was this intended? Yes, it was intentional. Programs should link against the versioned shared library at build time. > Could we at least add the symlink > 'libubus.so'? No, as it will break coexistence of different versions of libubus.so. It will also cause programs linking against the old libubus.so to pick up the new one with a different `struct ubus_client` memory layout, leading to undefined behavior and segmentation faults. > My take is that both of these changes, together with unsharing the ubus > package, were really unnecessary in a stable branch nearing its end of life. The changes solve multiple denial of service and invalid memory access issues, they were important enough to warrant this breaking change. > Thank you for insights and kind regards. You can find more details about library ABI versioning in https://openwrt.org/docs/guide-developer/package-policies#shared_libraries Kind regards, Jo
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