Hmm, at this link:
https://www.raspberrypi.org/forums/v...30036&p=264425
they claim tcc-compiled code for arm has intermittent segfaults, in different tests at different times (sometimes all tests succeed). And programs are less likely to fail with the -run switch (which runs C source as a script). Weird. The tcc version in our threads cannot read argv and argc either (reported as "standard" behavior in arm tcc).