does the Arduino core for STM32 support C++17?

[PerennialNovice]

If not, what variant is it based on?
Is it possible to change it?

[fpistm]

Hi, I've never tested to build with c++17.
You can try on you own:
https://github.com/stm32duino/Arduino_Core_STM32/blob/main/platform.txt#LL64C21-L64C21

Then let us know if it is ok.

[PerennialNovice]

For a small test-project it compiles and runs without problem...

[fpistm]

Fine,
I would not move to C++17 yet because several Third party libraries are probably not compliant.

[PerennialNovice]

thanks for the warning!

[fpistm]

Since this #1944, C++17 is the default standard.