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» SmaugMuds.org » Bugfix Lists » SmaugFUSS Bugfix List » [Bug] free_ban performs doubl...
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[Bug] free_ban performs double free on the ban_time member
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Post is unread #1 May 23, 2005, 6:07 pm
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Samson
Black Hand
GroupAdministrators
Posts3,643
JoinedJan 1, 2002

Bug: free_ban performs double free on the ban_time member
Danger: Trivial - Unnecessary double call to DISPOSE.
Found by: GatewaySysop
Fixed by: GatewaySysop

---

ban.c, free_ban

Locate:
void free_ban( BAN_DATA * pban )
{
   if( pban->name )
      DISPOSE( pban->name );
   if( pban->ban_time )
      DISPOSE( pban->ban_time );
   if( pban->note )
      STRFREE( pban->note );
   if( pban->ban_by )
      DISPOSE( pban->ban_by );
   if( pban->ban_time )
      DISPOSE( pban->ban_time );
   DISPOSE( pban );
}


Remove the second call to DISPOSE pban->ban_time, and the ifcheck immediately above it.

This error has no real harm since ban_time will have already been freed and made NULL by the first DISPOSE call. The second attempt to free it can't happen since it's been checked to see if it's NULL first.
       
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