CodeSonar : Irssi : Null Pointer Dereference

Categories:	LANG.MEM.NPD CWE:476
Warning ID:	2190.2195
Procedure:	net_host2ip
Trace:	View
Modified:	Wed Sep 2 11:52:00 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/dcc/dcc.c

			Enter dcc_ip2str

	159		void dcc_ip2str(IPADDR ip, char host)
	160		{
	161		IPADDR temp_ip;
	162		guint32 addr;
	163
	164		if (settings_get_str("dcc_own_ip") != '\0') { / Null Pointer Dereference (ID: 2191.2196) */
	165		/* overridden IP address */

net_host2ip(settings_get_str("dcc_own_ip"), &temp_ip );

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

					Enter dcc_ip2str / net_host2ip

int net_host2ip(const char *host, IPADDR *ip)

{

unsigned long addr;

if (strchr(host, ':') != NULL) { /* Null Pointer Dereference */

					Exit dcc_ip2str / net_host2ip

Preconditions

$unknown_495006 != 0
strlen(&$unknown_495006) != 0

Postconditions

host' = 0
host' = $param_2
ip' = $param_1
ip' = &temp_ip.family