[nagisa]

I have not seen a compiler that incidentally ICEs (crashes) more than IAR does (experience from c. 5 yrs ago.) Early-days rustc may come close, but experience is likely skewed by my perspective as a rustc contributor too.

And then we were always using IAR in a way that disabled all and every optimization; if enabling them did not lead to a compiler imploding, the compiler would produce invalid machine code even for trivial examples. This defeated any possible code size benefits that IAR may have had over GCC/Clang.

To top if off, I had an impression that reports of that nature weren’t really considered critical.

[sigsev_251]

Really? I would expect more than that from an EDG based professional compiler. A friend of mine uses the STM8 version in his workplace and he swears by it (though he still prefers SDCC due to C2x support)