From: Torsten Bögershausen Date: Thu, 12 Nov 2015 05:27:08 GMT Subject: Re: [PATCH] http: fix some printf format warnings on 32-bit builds Message-ID: <5644232C.2060700@web.de> In-Reply-To: <5643ABF0.5080207@ramsayjones.plus.com> >Ah. OK, so %ld for long and %lld for long long, I suppose. Only if you have a system that's support it. Linux does, Windows not. >Hmm, not that it matters, but I wonder what the PRId64 macro is. ;-) It's "I64d" for Windows, and "lld" for all Gnu based systems and others, When you do printf("%lld %ld", long_long_var, long_var), the "printf runtime" under Windows will treat "%lld" as "%ld", and print the lower part of long_long_var. And will not pull a long long from stack, but a long, resulting i all kinds of confusion So whenever a long long is printed, I can warmly recommend to use PRId64