Messages in this thread | | | Date | Wed, 9 Mar 2016 12:49:40 -0800 | From | Andrew Morton <> | Subject | Re: [RFC 0/7] eliminate snprintf with overlapping src and dst |
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On Tue, 8 Mar 2016 21:40:47 +0100 Rasmus Villemoes <linux@rasmusvillemoes.dk> wrote:
> Doing snprintf(buf, len, "%s...", buf, ...) for appending to a buffer > currently works, but it is somewhat fragile, and any other overlap > between source and destination buffers would be a definite bug. This > is an attempt at eliminating the relatively few occurences of this > pattern in the kernel.
I dunno,
snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button",
is pretty damn convenient. Can we instead state that "sprintf shall support this"? Maybe add a little __init testcase to vsprintf.c to check that it continues to work OK.
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