For C++ we don't maintain ABI compatibility between minor versions.

On Sat, Mar 6, 2021 at 12:13 AM Puya Daravi <puya.dar...@gmail.com> wrote:

> To clarify. It is not just that one symbol that has changed between those
> two versions. That is just one example.
>
> On Saturday, March 6, 2021 at 12:07:58 AM UTC-8 Puya Daravi wrote:
>
>> Hello,
>>
>> My understanding is that library vendors generally bump the major version
>> when a new version of the library is not ABI compatible with the old one
>> (i.e. when the libraries do not provide the same symbols)
>> However today I found an issue where the exported symbol
>> `internal::AssignDescriptors` (defined in `generated_message_reflection.h`)
>> has different signatures in protobuf/3.6.1 and protobuf/3.11.4. In the
>> earlier version it uses a number of arguments, whereas in the newer version
>> it uses the `DescriptorTable` struct.
>>
>> Is this a bug in protobuf versioning? Or does protobuf not guarantee ABI
>> stability between minor versions?
>>
>> Regards,
>> Puya
>>
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