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Avoid unwanted sign extension of indexed byte load in bpf code.

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PR:		89748
Submitted by:	Guy Harris <guy@alum.mit.edu>
Obtained from:	NetBSD via OpenBSD
MFC after:	2 weeks
This commit is contained in:
David Malone 2006-05-28 20:00:02 +00:00
parent 8f716f89cf
commit a58327bd09
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=159018
1 changed files with 2 additions and 2 deletions
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4
sys/net/bpf_filter.c
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@ -334,7 +334,7 @@ bpf_filter(pc, p, wirelen, buflen)
return 0;
m = (struct mbuf *)p;
MINDEX(m, k);
A = mtod(m, char *)[k];
A = mtod(m, u_char *)[k];
continue;
#else
return 0;
@ -353,7 +353,7 @@ bpf_filter(pc, p, wirelen, buflen)
return 0;
m = (struct mbuf *)p;
MINDEX(m, k);
X = (mtod(m, char *)[k] & 0xf) << 2;
X = (mtod(m, u_char *)[k] & 0xf) << 2;
continue;
#else
return 0;