Recommended version of gcc-arm-none-eabi for building FW about bluepill-serial-monster

[Nable80]

Don't blame your compiler for these warnings, please.
It does the right thing™ and it's better to fix the code instead (data[] instead of data[0]).

[r2axz]

Fair point, data[] is by any means the cleanest way to define flexible size arrays. Please test the linked PR.

As for the compiler version, I use arm-none-eabi-gcc (GNU Arm Embedded Toolchain 9-2020-q2-update) 9.3.1 20200408 (release) on my Mac which I use for development, and gcc-arm-none-eabi_15%3a9-2019-q4-0ubuntu1_amd64, which is used in GitHub actions. None of them shows this warning.

[iDoka]

I checked your PR.
Now gcc-arm-none-eabi-10-2020-q4-major works fine without any warnings.

Thanks for your quick fix!

[r2axz]

Thank you!