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