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Date: Thu, 28 Feb 2019 10:34:12 -0800 (PST) From: David Miller <davem@...emloft.net> To: maennich@...gle.com Cc: vyasevich@...il.com, nhorman@...driver.com, marcelo.leitner@...il.com, linux-sctp@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] sctp: chunk.c: correct format string for size_t in printk From: Matthias Maennich <maennich@...gle.com> Date: Thu, 28 Feb 2019 11:36:52 +0000 > According to Documentation/core-api/printk-formats.rst, size_t should be > printed with %zu, rather than %Zu. > > In addition, using %Zu triggers a warning on clang (-Wformat-extra-args): > > net/sctp/chunk.c:196:25: warning: data argument not used by format string [-Wformat-extra-args] > __func__, asoc, max_data); > ~~~~~~~~~~~~~~~~^~~~~~~~~ > ./include/linux/printk.h:440:49: note: expanded from macro 'pr_warn_ratelimited' > printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~ > ./include/linux/printk.h:424:17: note: expanded from macro 'printk_ratelimited' > printk(fmt, ##__VA_ARGS__); \ > ~~~ ^ > > Fixes: 5b5e0928f742 ("lib/vsprintf.c: remove %Z support") > Link: https://github.com/ClangBuiltLinux/linux/issues/378 > Signed-off-by: Matthias Maennich <maennich@...gle.com> Applied, thanks.
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