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Date: Wed, 07 Mar 2012 21:59:24 +0100 From: Peter Zijlstra <peterz@...radead.org> To: Ingo Molnar <mingo@...e.hu> Cc: Peter Seebach <peter.seebach@...driver.com>, Arnaldo Carvalho de Melo <acme@...hat.com>, Anton Blanchard <anton@...ba.org>, paulus@...ba.org, dsahern@...il.com, fweisbec@...il.com, yanmin_zhang@...ux.intel.com, emunson@...bm.net, linux-kernel@...r.kernel.org Subject: Re: [PATCH] perf: Incorrect use of snprintf results in SEGV On Wed, 2012-03-07 at 21:37 +0100, Ingo Molnar wrote: > size_needed = snprintf_size(...); This would require 3 passes over the fmt+args, first to find the allocated size is insufficient, 2nd to compute the size, 3rd to fill buffer. Whereas with the current "creative" API only 2 passes are needed. I can imagine that back in the day of small memory and small CPU this was deemed important enough. Anyway, its all moot, this API exists and has been out in the wild for several decades now, its not like we can actually change it :-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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