# Printing a uint64_t portably in Git? 5 messages from 2020-02-06 to 2020-02-06. Participants: Han-Wen Nienhuys, Martin Ågren, Junio C Hamano. Thread: https://gitlist.dev/t/52754 ## Han-Wen Nienhuys, 2020-02-06 17:52 Subject: Printing a uint64_t portably in Git? Message-ID: URL: https://gitlist.dev/e/CAFQ2z_Pac6yb9Vi782VMtPkssNmdc08WntS7xRt8KCFfM6KVsw%40mail.gmail.com ``` Hi, The reftable patch is starting to shape up, but I still see failures on OSX, See https://dev.azure.com/gitgitgadget/git/_build/results?buildId=29465&view=logs&j=cfa20e98-6997-523c-4233-f0a7302c929f&t=3de1ae02-4adb-5138-54da-65cec5dd3141&l=518 What is the right incantation to do printf of a uint64_t on OSX ? Apparently PRIuMAX is to be used for "uintmax_t", and not for "long long unsigned int". -- Han-Wen Nienhuys - Google Munich I work 80%. Don't expect answers from me on Fridays. -- Google Germany GmbH, Erika-Mann-Strasse 33, 80636 Munich Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Geschäftsführer: Paul Manicle, Halimah DeLaine Prado ``` ## Martin Ågren, 2020-02-06 18:00 Subject: Re: Printing a uint64_t portably in Git? Message-ID: URL: https://gitlist.dev/e/CAN0heSqoU1NxOtwaE_ZBBzghLXAeC4CxVh1x8R-efOVtbHdA5g%40mail.gmail.com In-Reply-To: ``` On Thu, 6 Feb 2020 at 18:54, Han-Wen Nienhuys wrote: > What is the right incantation to do printf of a uint64_t on OSX ? > > Apparently PRIuMAX is to be used for "uintmax_t", and not for "long > long unsigned int". You could cast it? Grepping around, that seems to be how PRIuMAX is used: printf("%"PRIuMAX"\n", (uintmax_t)var); Martin ``` ## Han-Wen Nienhuys, 2020-02-06 19:15 Subject: Re: Printing a uint64_t portably in Git? Message-ID: URL: https://gitlist.dev/e/CAFQ2z_Mez4khfvXx6R2K9JPagmoQWD-ZnT7rFiAW9Avjt%3D4PpQ%40mail.gmail.com In-Reply-To: ``` On Thu, Feb 6, 2020 at 7:00 PM Martin Ågren wrote: > > On Thu, 6 Feb 2020 at 18:54, Han-Wen Nienhuys wrote: > > What is the right incantation to do printf of a uint64_t on OSX ? > > > > Apparently PRIuMAX is to be used for "uintmax_t", and not for "long > > long unsigned int". > > You could cast it? Grepping around, that seems to be how PRIuMAX is > used: > > printf("%"PRIuMAX"\n", (uintmax_t)var); Looks like the inttypes.h standard has the defines that I want. -- Han-Wen Nienhuys - Google Munich I work 80%. Don't expect answers from me on Fridays. -- Google Germany GmbH, Erika-Mann-Strasse 33, 80636 Munich Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Geschäftsführer: Paul Manicle, Halimah DeLaine Prado ``` ## Martin Ågren, 2020-02-06 19:52 Subject: Re: Printing a uint64_t portably in Git? Message-ID: URL: https://gitlist.dev/e/CAN0heSrOvAdXs-8n0Cz4NMHqoxYfpStUOZcPRT1iQnA3R1srbQ%40mail.gmail.com In-Reply-To: ``` On Thu, 6 Feb 2020 at 20:15, Han-Wen Nienhuys wrote: > > On Thu, Feb 6, 2020 at 7:00 PM Martin Ågren wrote: > > > > On Thu, 6 Feb 2020 at 18:54, Han-Wen Nienhuys wrote: > > > What is the right incantation to do printf of a uint64_t on OSX ? > > > > > > Apparently PRIuMAX is to be used for "uintmax_t", and not for "long > > > long unsigned int". > > > > You could cast it? Grepping around, that seems to be how PRIuMAX is > > used: > > > > printf("%"PRIuMAX"\n", (uintmax_t)var); > > Looks like the inttypes.h standard has the defines that I want. Oh, cool. We handle PRIuMAX and PRId64 in compat/mingw.h, but other than that, it seems we rely on these being available. There's some discussion in ebc3278665 ("git-compat-util.h: drop the `PRIuMAX` and other fallback definitions", 2019-11-24). Martin ``` ## Junio C Hamano, 2020-02-06 21:11 Subject: Re: Printing a uint64_t portably in Git? Message-ID: URL: https://gitlist.dev/e/xmqqk14ze806.fsf%40gitster-ct.c.googlers.com In-Reply-To: ``` Martin Ågren writes: > On Thu, 6 Feb 2020 at 18:54, Han-Wen Nienhuys wrote: >> What is the right incantation to do printf of a uint64_t on OSX ? >> >> Apparently PRIuMAX is to be used for "uintmax_t", and not for "long >> long unsigned int". > > You could cast it? Grepping around, that seems to be how PRIuMAX is > used: > > printf("%"PRIuMAX"\n", (uintmax_t)var); Yup, that is used already in existing code in our codebase, so it is just as portable as the rest of Git is ;-) Thanks. ```