CodeSonar : Irssi : Null Pointer Dereference

Categories:	LANG.MEM.NPD CWE:476
Warning ID:	2364.2375
Procedure:	text_chunk_create
Trace:	View
Modified:	Wed Sep 2 12:21:12 2009 show details hide details

Legend	[ X ]
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

Hide Legend

Problem	Line	Source

			/u1/paul/SATE/2010/c/irssi/irssi-0.8.14/src/fe-text/textbuffer.c

			Enter textbuffer_line_create

{

LINE_REC *rec;

if (buffer->cur_text == NULL)

text_chunk_create(buffer );

					Enter textbuffer_line_create / text_chunk_create

{

TEXT_CHUNK_REC *rec;

unsigned char *buf, *ptr, **pptr;

rec->pos = 0;

rec->refcount = 0;

if (buffer->cur_line != NULL && buffer->cur_line->text != NULL) {

/* create a link to new block from the old block */

buf = buffer->cur_text->buffer + buffer->cur_text->pos; /* Null Pointer Dereference */

					Exit textbuffer_line_create / text_chunk_create

Preconditions

&$unknown_3203079 = 16376
((char*)$param_1)[32] = 0
((char*)&((char*)*$param_1)[24])[16] != 0

Postconditions

((char*)&$unknown_3203080)[16368]' = 0
((char*)&$unknown_3203080)[16372]' = 0
buffer' = $param_1
buffer' = $param_1
rec' = &$unknown_3203080