Resumable functions don't compile with gcc13

[hshose]

When I compile protothreaded code with my gcc 13

e.g., the examples/nucleo_g474re/max31855/, I get the following error without any further hints from the compiler:

main.cpp: In member function 'bool ThermocoupleThread::run()':
modm/src/modm/processing/protothread/macros.hpp:91:22: error: jump to case label
   91 |                 case __LINE__: \
      |                      ^~~~~~~~

My gcc is arm-none-eabi-gcc --version: arm-none-eabi-gcc (Arch Repository) 13.1.0

[salkinium]

Well… it is undefined behavior. Just in time to switch to fibers with #1001! (no seriously, we're switching to fibers, I'm tired of this bullshit).