Fix various memory management issues

Consistently handle allocation failures. Some functions are changed to
return bool or int instead of void to allow returning an error.

Also fix a buffer size miscalculation in lua/uloop and use _exit() instead
of exit() on errors after forking.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/utils.c b/utils.c
index 8fd19f4..91dd71e 100644
--- a/utils.c
+++ b/utils.c
@@ -43,6 +43,8 @@ void *__calloc_a(size_t len, ...)
 	va_end(ap1);
 
 	ptr = calloc(1, alloc_len);
+	if (!ptr)
+		return NULL;
 	alloc_len = 0;
 	foreach_arg(ap, cur_addr, cur_len, &ret, len) {
 		*cur_addr = &ptr[alloc_len];