If you optimize for size, maybe have a look if BOARD_INSUFFICIENT_MEMORY is still valid ;-)

@miri64 it wasn't in the first place: without this PR it wouldn't fit onto a arduino-duemilanove thats why I started this 😉 From the specs it should work with the blacklisted nucleos (BOARD_INSUFFICIENT_MEMORY := nucleo32-f042 nucleo32-f031) now, too. Unfortunately, as with many test cases: I do not have those boards at my disposal 😞

Besides: I think its better to have a README for tests, anyway - while the test apps in itself should be small without unnecessary bloat.

Unfortunately, as with many test cases: I do not have those boards at my disposal 😞

You don't need it: assuming the board provider configured the linker correctly, just running the linker (i.e. run make all) would suffice. If it does not fit it will error.

Besides: I think its better to have a README for tests, anyway - while the test apps in itself should be small without unnecessary bloat.

I agree. Just want to keep the build tests up to date ;-)

@miri64 the nucleos still don't fit. At least not with the current board/cpu configuration, i.e., the problem is that even those small mem nucleos share common config from cpu/cortrexm_common where #define THREAD_STACKSIZE_DEFAULT (1024) is set, which is way to large here.

I created an issue see #6669.

ping!