Re: Stable update to newer GCC versions soon?

On 20/03/2026 20:05, Brian Inglis via Cygwin-apps wrote:
> On 2026-03-20 10:20, Hamish McIntyre-Bhatty via Cygwin-apps wrote:
>> On 19/03/2026 20:16, Brian Inglis via Cygwin-apps wrote:
>>> On 2026-03-19 09:10, Hamish McIntyre-Bhatty via Cygwin-apps wrote:
>>>> I see that there are test packages for newer versions of GCC, but 
>>>> the stable packages remains on the older GCC 13. I've encountered 
>>>> internal compiler errors when compiling unit tests for python- 
>>>> pybind11, and I was wondering why the test versions haven't been 
>>>> marked stable yet, as they might fix the issue.
>>>>
>>>> If the answer is that more testing needs to be done then I may 
>>>> volunteer myself for that as it would probably benefit me to have a 
>>>> newer stable compiler. Also, can I report the internal compiler 
>>>> errors upstream or can I not due to downstream Cygwin patches?
>>>
>>> GCC packages are normally considered stable when they reach V.4... 
>>> which for V14 might have been expected to be last ~August but now 
>>> may not be until ~May or ~August?
>>
>> Oh, okay, I wasn't aware of that, and a quick search suggests that 
>> they should be stable from the V.1 release, which is in keeping with 
>> when many common Linux distros update? Am I missing something, or is 
>> this just when the Cygwin packages are considered stable?
>
> GCC regression testing is not really complete until V.4... is 
> released, so I think as we support only one current stable version, 
> that is the level required to trust as default for building the base 
> and packages.
> It also gives us quite some time to test against the base and packages.

Ah okay, makes sense. Should I report internal compiler errors upstream 
or to Cygwin then? I guess I should probably just go check if there are 
a lot of patches for Cygwin support in GCC, or if it's just all upstreamed?


>
>>>      https://gcc.gnu.org/gcc-13/
>>>
>>>      Release History
>>>
>>>      GCC 13.4
>>>          June 5, 2025 (changes, documentation)
>>>      GCC 13.3
>>>          May 21, 2024 (changes, documentation)
>>>      GCC 13.2
>>>          July 27, 2023 (changes, documentation)
>>>      GCC 13.1
>>>          April 26, 2023 (changes, documentation)
>>>
>>>      https://gcc.gnu.org/gcc-14/
>>>
>>>      Release History
>>>
>>>      GCC 14.3
>>>          May 23, 2025 (changes, documentation)
>>>      GCC 14.2
>>>          Aug 1, 2024 (changes, documentation)
>>>      GCC 14.1
>>>          May 7, 2024 (changes, documentation)
>>>
>>>      https://gcc.gnu.org/gcc-15/
>>>
>>>      Release History
>>>
>>>      GCC 15.2
>>>          August 8, 2025 (changes, documentation)
>>>      GCC 15.1
>>>          April 25, 2025 (changes, documentation)
>>>
>>>      https://gcc.gnu.org/gcc-16/
>>>
>>>          https://gcc.gnu.org/gcc-16/criteria.html
>>>
>>> Source Package: gcc
>>>
>>>     summary: GNU Compiler Collection
>>> ...
>>> Version            Arch...       Date ...Status Files
>>> ...
>>> 11.4.0-1            src... 2023-06-05 ...stable .../gcc-11.4.0-1-src
>>> 11.5.0-1            src... 2024-07-21 ...stable .../gcc-11.5.0-1-src
>>> 12.4.0-3            src... 2024-07-29 ...stable .../gcc-12.4.0-3-src
>>> 12.5.0-1            src... 2025-07-13 ...stable .../gcc-12.5.0-1-src
>>> 13.4.0-1            src... 2025-06-15 ...stable .../gcc-13.4.0-1-src
>>> 14.3.1+20260206-0.1 src... 2026-02-11 ... test  .../ 
>>> gcc-14.3.1+20260206-0.1-src
>>> 15.2.1+20260207-0.1 src... 2026-02-11 ... test  .../ 
>>> gcc-15.2.1+20260207-0.1-src
>>> 16.0.0+20260208-0.1 src... 2026-02-15 ... test  .../ 
>>> gcc-16.0.0+20260208-0.1-src
>>>
>>
>
>