1 files changed, 1 insertions, 1 deletions

diff --git a/llex.c b/llex.c
index 1539f525..b0bab377 100644
--- a/llex.c
+++ b/llex.c
@@ -334,8 +334,8 @@ static unsigned long readutf8esc (LexState *ls) {
   r = gethexa(ls);  /* must have at least one digit */
   while ((save_and_next(ls), lisxdigit(ls->current))) {
     i++;
+    esccheck(ls, r <= (0x7FFFFFFFu >> 4), "UTF-8 value too large");
     r = (r << 4) + luaO_hexavalue(ls->current);
-    esccheck(ls, r <= 0x7FFFFFFFu, "UTF-8 value too large");
   }
   esccheck(ls, ls->current == '}', "missing '}'");
   next(ls);  /* skip '}' */