diff options
Diffstat (limited to 'src/references.c')
| -rw-r--r-- | src/references.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/src/references.c b/src/references.c index 31e2a3c..6759c2c 100644 --- a/src/references.c +++ b/src/references.c @@ -16,10 +16,12 @@ refhash(const unsigned char *link_ref) static void reference_free(reference *ref) { - free(ref->label); - free(ref->url); - free(ref->title); - free(ref); + if(ref != NULL) { + free(ref->label); + free(ref->url); + free(ref->title); + free(ref); + } } // normalize reference: collapse internal whitespace to single space, @@ -31,6 +33,9 @@ static unsigned char *normalize_reference(chunk *ref) strbuf normalized = GH_BUF_INIT; unsigned char *result; + if(ref == NULL) + return NULL; + if (ref->len == 0) return NULL; @@ -75,14 +80,16 @@ extern void reference_create(reference_map *map, chunk *label, chunk *url, chunk if (reflabel == NULL) return; - ref = malloc(sizeof(reference)); - ref->label = reflabel; - ref->hash = refhash(ref->label); - ref->url = clean_url(url); - ref->title = clean_title(title); - ref->next = NULL; + ref = calloc(1, sizeof(*ref)); + if(ref != NULL) { + ref->label = reflabel; + ref->hash = refhash(ref->label); + ref->url = clean_url(url); + ref->title = clean_title(title); + ref->next = NULL; - add_reference(map, ref); + add_reference(map, ref); + } } // Returns reference if refmap contains a reference with matching @@ -118,6 +125,9 @@ void reference_map_free(reference_map *map) { unsigned int i; + if(map == NULL) + return; + for (i = 0; i < REFMAP_SIZE; ++i) { reference *ref = map->table[i]; reference *next; @@ -134,7 +144,5 @@ void reference_map_free(reference_map *map) reference_map *reference_map_new(void) { - reference_map *map = malloc(sizeof(reference_map)); - memset(map, 0x0, sizeof(reference_map)); - return map; + return calloc(1, sizeof(reference_map)); } |