]> git.baikalelectronics.ru Git - kernel.git/commit
vsprintf: correctly handle width when '#' flag used in %#p format
authorGrant Likely <grant.likely@secretlab.ca>
Thu, 31 May 2012 23:26:08 +0000 (16:26 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 1 Jun 2012 00:49:27 +0000 (17:49 -0700)
commit874ebcf3700e54eb60627d69c47cae688559a3bb
treec68759e4765673eb1f28e220edea40d84d9ff744
parentf382bf3dae47fd2c5033f8cebcb413f9a5b17be1
vsprintf: correctly handle width when '#' flag used in %#p format

The '%p' output of the kernel's vsprintf() uses spec.field_width to
determine how many digits to output based on 2 * sizeof(void*) so that all
digits of a pointer are shown.  ie.  a pointer will be output as
"001A2B3C" instead of "1A2B3C".  However, if the '#' flag is used in the
format (%#p), then the code doesn't take into account the width of the
'0x' prefix and will end up outputing "0x1A2B3C" instead of "0x001A2B3C".

This patch reworks the "pointer()" format hook to include 2 characters for
the '0x' prefix if the '#' flag is included.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/vsprintf.c