1 files changed, 5 insertions, 1 deletions
diff --git a/lib.c b/lib.c
index a9a61fa..d6889c6 100644
--- a/lib.c
+++ b/lib.c
@@ -1227,7 +1227,7 @@ uc_printf_common(uc_vm *vm, size_t nargs, uc_stringbuf_t *buf)
 
 			memset(&arg, 0, sizeof(arg));
 
-			while (strchr("0- ", *p)) {
+			while (*p != '\0' && strchr("0- ", *p)) {
 				if (fp + 1 >= sfmt + sizeof(sfmt))
 					goto next;
 
@@ -1353,6 +1353,10 @@ uc_printf_common(uc_vm *vm, size_t nargs, uc_stringbuf_t *buf)
 
 				break;
 
+			case '\0':
+				p--;
+				/* fall through */
+
 			default:
 				goto next;
 			}