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Prevent segfault in setsockopt when optname is SO_LINGER and optval is 

null.
oldstable
Stephen Langasek 1998-12-14 18:11:24 +00:00 committed by Alexandre Julliard
parent 882c1bef62
commit 0875d6e923
1 changed files with 3 additions and 1 deletions
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4
misc/winsock.c
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@ -1477,10 +1477,12 @@ INT32 WINAPI WINSOCK_setsockopt32(SOCKET16 s, INT32 level, INT32 optname,
struct linger linger;
convert_sockopt(&level, &optname);
if (optname == SO_LINGER) {
if (optname == SO_LINGER && optval) {
/* yes, uses unsigned short in both win16/win32 */
linger.l_onoff = ((UINT16*)optval)[0];
linger.l_linger = ((UINT16*)optval)[1];
/* FIXME: what is documented behavior if SO_LINGER optval
is null?? */
optval = (char*)&linger;
optlen = sizeof(struct linger);
}