Unpleasantly, GCC is utter crap for debugging even at -O0 on ARM64 platforms. I've tried both -O0 and -Og. :-( Highly unpredictable step-over behaviour, and man

Unpleasantly, GCC is utter crap for debugging even at -O0 on ARM64 platforms. I've tried both -O0 and -Og. :-( Highly unpredictable step-over behaviour, and many genuine lines of code that won't take breakpoints.... MSVC has always been immaculately good at debugging, so this is an unpleasant surprise that's seriously cutting into my productivity. I've always felt that the debug code performance penalty was a good proxy for simulating what what users experience on machines that aren't god-level development machines. If it doesn't perform nicely on my machine with -O0, it's not likely to perform well on machines owned by mere mortals. And there's the extra lovely reward of being pleasantly surprised the snappy lively responsiveness of code that's compiled with -O3. (Optimizing actually-performance-critical code is of course, a separate kettle of fish).