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Prevent danger of accessing freed memory (theoretical but unlikely

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bug).
This commit is contained in:
Bill Medland 2001-11-06 22:25:11 +00:00 committed by Alexandre Julliard
parent c9b0237513
commit 9e5af61ed5
1 changed files with 6 additions and 1 deletions
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7
server/select.c
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@ -58,7 +58,11 @@ int add_select_user( struct object *obj )
if (!(newusers = realloc( poll_users, new_count * sizeof(*poll_users) ))) return -1;
if (!(newpoll = realloc( pollfd, new_count * sizeof(*pollfd) )))
{
free( newusers );
if (allocated_users)
poll_users = newusers;
else
free( newusers );
obj->select = -1;
return -1;
}
poll_users = newusers;
@ -80,6 +84,7 @@ int add_select_user( struct object *obj )
void remove_select_user( struct object *obj )
{
int user = obj->select;
assert( user >= 0 );
assert( poll_users[user] == obj );
pollfd[user].fd = -1;
pollfd[user].events = 0;