Interesting Error on STM32F030K6 with remapped serial

[Giovanni]

Try GCC 5.x, I will put a check on the compiler version before next release anyway.

The problem has not been fixed yet, not even in GCC 8.

Giovanni

[rew]

... the compiler bug, ....
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88167

there is no easy way to workaround this.

What about this:

* you take the compiler ASM output, fix it and include it in an "#if GCC_BUG_PRESENT" as an alternative to the better code. Leave the original in the #else...

[Giovanni]

I have not found "better code" yet but I will add a warning suppression macro, good idea.

Giovanni

[Giovanni]

Apparently the problem has been fixed in repository: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88167

Giovanni

[electronic_eel]

Unfortunately the other problem related to __builtin_return_address is still open and unfixed:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88656

So for the time being you still can't use a recent gcc for ChibiOS on Cortex-M0 / Cortex-M0+.

[Giovanni]

I think it is a duplicate, it is the same error. Next releases should be fine and I will modify the check in the code.

Giovanni