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Irssi : Irssi analysis 1 : Null Pointer Dereference  at mainwindows.c:810

Categories: LANG.MEM.NPD CWE:476
Warning ID: 2383.2394
Procedure: cmd_window_show
Trace: View
Modified: Wed Sep 2 12:22:54 2009   show details
 
Priority: None
State: None
Finding: None
Owner: None
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Warning Location
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Parse Error
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Two or More Loop Iterations
On Execution Path
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Warning Location Contributes Parse Error
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Source  |  Language: C Hide Legend     
ProblemLineSource
   /u1/paul/SATE/2010/c/irssi/irssi-0.8.14/src/fe-text/mainwindows.c
   Enter cmd_window_show
 783 static void cmd_window_show(const char *data) 
 784 {
 785         MAIN_WINDOW_REC *parent;
 786         WINDOW_REC *window;
 787  
 788         if (*data == '\0') cmd_return_error(CMDERR_NOT_ENOUGH_PARAMS);
 789  
 790         if (is_numeric(data, '\0')) {
 791                 window = window_find_refnum(atoi(data));
 792                 if (window == NULL) {
 793                         printformat_window(active_win, MSGLEVEL_CLIENTERROR,
 794                                            TXT_REFNUM_NOT_FOUND, data);
 795                 }
 796         } else {
 797                 window = window_find_item(active_win->active_server, data);
 798         }
 799  
 800         if (window == NULL || is_window_visible(window))
 801                 return;
 802  
 803         if (WINDOW_GUI(window)->sticky) {
 804                 printformat_window(active_win, MSGLEVEL_CLIENTERROR,
 805                                    TXT_CANT_SHOW_STICKY_WINDOWS);
 806                 return;
 807         }
 808  
true809         parent = mainwindow_create();
parent <= 4095810         parent->active = window;     /* Null Pointer Dereference */
Preconditions 
((char*)&((char*)$unknown_3353830)[152])[16] = 0
*$param_1 != 0
strlen($param_1) != 0
*((char*)$unknown_3353830)[152] != &$unknown_3353830
mainwindows >= 1
Postconditions 
data' = $param_1
parent' = 0
window' = &$unknown_3353830



Change Warning 2383.2394 : Null Pointer Dereference

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