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Irssi : Irssi analysis 1 : Null Pointer Dereference  at fe-windows.c:179

Categories: LANG.MEM.NPD CWE:476
Warning ID: 2333.2343
Procedure: window_change_server
Trace: View
Modified: Wed Sep 2 12:15:55 2009   show details
 
Priority: None
State: None
Finding: None
Owner: None
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Warning Location
Contributes
Parse Error
Other Warning
Two or More Loop Iterations
On Execution Path
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Warning Location Contributes Parse Error
Other Warning Two or More Loop Iterations On Execution Path
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Source  |  Language: C Hide Legend     
ProblemLineSource
   /u1/paul/SATE/2010/c/irssi/irssi-0.8.14/src/perl/ui/Window.c
   Enter XS_Irssi__UI__Window_change_server
 707 XS(XS_Irssi__UI__Window_change_server) 
 708 {
 709 #ifdef dVAR 
 710     dVAR; dXSARGS;
 711 #else 
 712     dXSARGS; 
 713 #endif 
 714     if (items != 2)
 715        Perl_croak(aTHX_ "Usage: %s(%s)", "Irssi::UI::Window::change_server", "window, server");
 716     PERL_UNUSED_VAR(cv); /* -W */ 
 717     {
true718         Irssi__UI__Window       window = irssi_ref_object(ST(0));
 719         Irssi__Server   server = irssi_ref_object(ST(1));
 720  
window <= 4095721         window_change_server(window, server);
     /u1/paul/SATE/2010/c/irssi/irssi-0.8.14/src/fe-common/core/fe-windows.c
     Enter XS_Irssi__UI__Window_change_server / window_change_server
$param_1 <= 4095162   void window_change_server(WINDOW_REC *window, void *server) 
 163   {
 164           SERVER_REC *active, *connect;
 165    
 166           if (server != NULL && SERVER(server)->disconnected)   /* Null Pointer Dereference (ID: 2230.2236) */
 167                   return;
 168    
 169           if (server == NULL) {
 170                   active = connect = NULL;
 171           } else if (g_slist_find(servers, server) != NULL) {
 172                   active = server;
 173                   connect = NULL;
 174           } else {
 175                   active = NULL;
 176                   connect = server;
 177           }
 178    
window <= 4095179           if (window->connect_server != connect) {     /* Null Pointer Dereference */
     Exit XS_Irssi__UI__Window_change_server / window_change_server
Preconditions 
&$unknown_2754445 != 0
((char*)&$unknown_2754444)[56] = 0
Postconditions 
active' = &$unknown_2754444
$unknown_2754425' = $unknown_2754425 - 4
connect' = 0
cv' = $param_2
items' != 2
my_perl' = $param_1
server' = &$unknown_2754444
server' = &$unknown_2754444
window' = 0
window' = 0



Change Warning 2333.2343 : Null Pointer Dereference

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