GCC 6.3 vs 6.3.1 - whats the difference? Is 6.3.1 an unofficial secret GCC release?

[Jonathan Wakely]

On 13 June 2017 at 07:01, info rmer wrote:
> 13.06.2017, 01:39, "Jonathan Wakely" <jwakely.gcc@gmail.com>:
>> On 12 June 2017 at 19:37, info rmer wrote:
>>>  A lot of Linux distributions have gcc 6.3.1 available, or even preinstalled.
>>>  However, I am not able to find any info about 6.3.1 at the official GCC pages at gnu org.
>>
>> See https://gcc.gnu.org/develop.html#num_scheme
>
> Sadly this num_scheme link does not contain any mention to 6.3.1

Look again and see if you can extrapolate from the descriptions for
5.1.1 and 5.2.1 and guess what 6.3.1 might be. It's quite simple.