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Diffstat (limited to 'src/references.c')
-rw-r--r--src/references.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/src/references.c b/src/references.c
index 3e54b48..0ae7961 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;
@@ -134,8 +144,6 @@ 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));
}