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-rw-r--r--src/mem.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/src/mem.c b/src/mem.c
index 63aea73..01fb010 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -176,7 +176,7 @@ dbg_malloc (size_t size, const char *pos)
unsigned *buf;
if (size == 0)
- return (void *)0;
+ return NULL;
size = EXTRA_SPACE + (size + sizeof (unsigned) - 1) / sizeof (unsigned);
buf = xmalloc (size * sizeof (unsigned));
@@ -197,13 +197,13 @@ dbg_calloc (size_t nmemb, size_t size, const char *pos)
void *buf;
if (!nmemb || !size)
- return (void *)0;
+ return NULL;
EXIT_IF (nmemb > SIZE_MAX / size, _("overflow at %s"), pos);
size *= nmemb;
if ((buf = dbg_malloc (size, pos)) == NULL)
- return (void *)0;
+ return NULL;
bzero (buf, size);
@@ -216,16 +216,16 @@ dbg_realloc (void *ptr, size_t nmemb, size_t size, const char *pos)
unsigned *buf, old_size, new_size, cpy_size;
if (ptr == NULL)
- return (void *)0;
+ return NULL;
new_size = nmemb *size;
if (new_size == 0)
- return (void *)0;
+ return NULL;
EXIT_IF (nmemb > SIZE_MAX / size, _("overflow at %s"), pos);
if ((buf = dbg_malloc (new_size, pos)) == NULL)
- return (void *)0;
+ return NULL;
old_size = *((unsigned *)ptr - EXTRA_SPACE_START + BLK_SIZE);
cpy_size = (old_size > new_size) ? new_size : old_size;
@@ -243,11 +243,11 @@ dbg_strdup (const char *s, const char *pos)
char *buf;
if (s == NULL)
- return (char *)0;
+ return NULL;
size = strlen (s);
if ((buf = dbg_malloc (size + 1, pos)) == NULL)
- return (char *)0;
+ return NULL;
return strncpy (buf, s, size + 1);
}