On 10/18/2017 03:39 PM, William A Rowe Jr wrote: > In building your repro case, you'll need to toggle several flags to see how to > trip this up; > > |- CMAKE_C_FLAGS_RELEASE:STRING=/MD /O2 /Ob2 /DNDEBUG + > CMAKE_C_FLAGS_RELEASE:STRING=/O2 /Wall /Zi| > I'd start with your problem case /O2 /Wall /Zi, and retest adding /Ob2, /MD > and /NDEBUG in that order. Simply slice and dice until you find the flags > which cause the negative min limit to fail ERANGE, but the positive max > case to not toggle errno. > > Good luck
The "problem" is the presence or lack thereof of /MD. Updated notes: https://github.com/Karm/_strtoi64_reproducer#conclusion I'm gonna try to fiddle with VS and compare asm for that part. I don't understand why not having /MD is a problem for this single threaded dead simple case. I'm also bewildered as to why my trimmed down example works even without /MD... -K- > > > On Wed, Oct 18, 2017 at 6:45 AM, Michal Karm <michal.baba...@gmail.com > <mailto:michal.baba...@gmail.com>> wrote: > > Hello APR folks, > > I've encountered a weird glitch with APR test for _strtoi64 > that is always reproducible with testall.exe -v teststr, > but I cannot reproduce it with a minimized example > neither I understand what is actually going on. > > If you care to read a short memo I wrote on the > subject and possibly enlighten me here on the list, > It would be much appreciated. > > See https://github.com/Karm/_strtoi64_reproducer > <https://github.com/Karm/_strtoi64_reproducer> > > > Cheers > > Michal Karm Babacek > > -- > Sent from my Hosaka Ono-Sendai Cyberspace 7 > > > Michal Karm Babacek -- Sent from my Hosaka Ono-Sendai Cyberspace 7
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