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Irssi : Irssi analysis 1 : Null Pointer Dereference  at window-activity.c:61

Categories: LANG.MEM.NPD CWE:476
Warning ID: 2341.2351
Procedure: window_item_activity
Trace: View
Modified: Wed Sep 2 12:16:29 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
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__Windowitem_activity
 1065 XS(XS_Irssi__Windowitem_activity) 
 1066 {
 1067 #ifdef dVAR 
 1068     dVAR; dXSARGS;
 1069 #else 
 1070     dXSARGS; 
 1071 #endif 
 1072     if (items < 2 || items > 3)
 1073        Perl_croak(aTHX_ "Usage: %s(%s)", "Irssi::Windowitem::activity", "item, data_level, hilight_color=NULL");
 1074     PERL_UNUSED_VAR(cv); /* -W */ 
 1075     {
true1076         Irssi__Windowitem       item = irssi_ref_object(ST(0));
 1077         int     data_level = (int)SvIV(ST(1));
 1078         char *  hilight_color;
 1079  
 1080         if (items < 3)
 1081             hilight_color = NULL;
 1082         else {
 1083             hilight_color = (char *)SvPV_nolen(ST(2));
 1084         }
 1085  
item <= 40951086         window_item_activity(item, data_level, hilight_color);
     /u1/paul/SATE/2010/c/irssi/irssi-0.8.14/src/fe-common/core/window-activity.c
     Enter XS_Irssi__Windowitem_activity / window_item_activity
 56   void window_item_activity(WI_ITEM_REC *item, int data_level,
$param_1 <= 409557                             const char *hilight_color) 
 58   {
 59           int old_data_level;
 60    
item <= 409561           old_data_level = item->data_level;     /* Null Pointer Dereference */
     Exit XS_Irssi__Windowitem_activity / window_item_activity
Preconditions 
&$unknown_2861757 >= 4
&$unknown_2861788 = 1083
Postconditions 
_svi' = &$unknown_2861784
_svi' = &$unknown_2861773
$unknown_2861751' = $unknown_2861751 - 4
cv' = $param_2
data_level' = data_level'
hilight_color' = ((char*)&$unknown_2861784)[16]
hilight_color' = ((char*)&$unknown_2861784)[16]
item' = 0
item' = 0
items' = &$unknown_2861757
my_perl' = $param_1



Change Warning 2341.2351 : Null Pointer Dereference

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