1 files changed, 18 insertions, 0 deletions
diff --git a/src/alloc.c b/src/alloc.c
new file mode 100644
index 0000000..35b45c0
--- /dev/null
+++ b/src/alloc.c
@@ -0,0 +1,18 @@
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "alloc.h"
+#include "errors.h"
+
+void *
+bufalloc(void *ptr, size_t nmemb, size_t size)
+{
+	if (size > SIZE_MAX / nmemb) {
+		errno = EOVERFLOW;
+		err("%s:", __func__);
+	}
+	if ((ptr = realloc(ptr, nmemb * size)) == NULL)
+		err("%s:", __func__);
+	return ptr;
+}