On Wednesday 20 September 2017 10:57 AM, Jonathan Nieder wrote:
Guard the loop with a NULL check to make the intent crystal clear to even the most pedantic compiler. A suitably clever compiler could let the NULL check only run in the first iteration,
Noted this just now. So, the overhead doesn't occur when the compilers are clever enough. And as I said in my previous email to this thread, at least 'gcc' and 'clang' seem to be clever enough.
... but regardless, this overhead is likely to be dwarfed by the work to be done on each item.
:-) That's of course seems to be true.
