Criteria for a warning to be in -Wall? (was: Re: a warning to implement)

[Robert Dewar]

<It seems to me that if we had an optimization level (call it -O0.5, or
just adjust -O1) in which, at the end of each line, values get flushed
back to memory, we'd pretty much have it: complicated expressions inside
one line of code could be optimized as much as you want, but the
developer in the debugger would see just what he wrote.
>>

That sounds right, although even that may be to extreme, the debugger
can deal with local variables that live cleanly and permanently in registers.