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From: Marius Strobl <marius@FreeBSD.org>
Date: Sat, 9 Jul 2011 18:47:51 +0000 (UTC)
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Subject: cvs commit: src/sys/sys pcpu.h
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marius      2011-07-09 18:47:51 UTC

  FreeBSD src repository

  Modified files:
    sys/sys              pcpu.h 
  Log:
  SVN rev 223893 on 2011-07-09 18:47:51Z by marius
  
  Fix the definition for PCPU_NAME_LEN, which is intended to fit
  ("CPU %d", cpuid) where cpuid <= MAXCPU.
  
  1. sizeof(__XSTRING(MAXCPU) + 1) is a typo: typeof(__XSTRING(...) + 1)
     is 'char *', so sizeof() will return the size of the pointer, not
     the size of the string contents. The proper expression should be
     'sizeof(__XSTRING(MAXCPU)) + 1'.
  
  2. One should not add one, but substract it: sizeof() accounts for the
     trailing '\0' and we have two sizeof's, so the size of one '\0'
     should be substracted -- this will give the maximal string buffer
     length for CPU with its number, no less, no more.
  
  Submitted by:   rea
  
  Revision  Changes    Path
  1.55      +1 -1      src/sys/sys/pcpu.h