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libplumb: realloc memleak (thank you clsmith, THANK YOU!)

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This commit is contained in:
cinap_lenrek 2012-05-14 01:35:17 +02:00
parent 042bc5be35
commit b3d47c3a3a
1 changed files with 5 additions and 3 deletions
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8
sys/src/libplumb/mesg.c
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@ -411,7 +411,7 @@ plumbunpack(char *buf, int n)
Plumbmsg*
plumbrecv(int fd)
{
char *buf;
char *buf, *old;
Plumbmsg *m;
int n, more;
@ -424,9 +424,11 @@ plumbrecv(int fd)
m = plumbunpackpartial(buf, n, &more);
if(m==nil && more>0){
/* we now know how many more bytes to read for complete message */
buf = realloc(buf, n+more);
if(buf == nil)
buf = realloc(old = buf, n+more);
if(buf == nil){
free(old);
return nil;
}
if(readn(fd, buf+n, more) == more)
m = plumbunpackpartial(buf, n+more, nil);
}