CodeSonar : Irssi : Null Pointer Dereference

Categories:	LANG.MEM.NPD CWE:476
Warning ID:	2169.2173
Procedure:	cmd_who
Trace:	View
Modified:	Wed Sep 2 11:51:42 2009 show details hide details

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Warning Location Contributes Parse Error Other Warning Two or More Loop Iterations On Execution Path Comment Macro Preprocessor Include Keyword Preprocessed Away

Source | Language: C

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Problem	Line	Source

			/u1/paul/SATE/2010/c/irssi/irssi-0.8.14/src/irc/core/irc-commands.c

			Enter cmd_who

static void cmd_who(const char *data, IRC_SERVER_REC *server,

WI_ITEM_REC *item)

{

char *channel, *rest;

void *free_arg;

return;

if (strcmp(channel, "*") == 0 || *channel == '\0') {

if (!IS_IRC_CHANNEL (item ))

cmd_param_error (CMDERR_NOT_JOINED );

channel = IRC_CHANNEL (item )->name; /* Null Pointer Dereference */

Preconditions

$param_1 != 0
((char*)$param_2)[56] != 0
((char*)$param_3)[4] != *chat_protocols->data
$unknown_388646 = 0
strlen(&$unknown_388646) = 0

Postconditions

channel' = &$unknown_388646
data' = $param_1
item' = $param_3
server' = $param_2