From a7e13e5307dca19ef63b040dd585b6631da0c932 Mon Sep 17 00:00:00 2001
From: Michael Droettboom <mdboom@gmail.com>
Date: Fri, 28 Dec 2018 10:19:51 -0500
Subject: [PATCH] Fix buffer overrun

---
 src/python2js_buffer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/python2js_buffer.c b/src/python2js_buffer.c
index ba7e34877..cbb5454d5 100644
--- a/src/python2js_buffer.c
+++ b/src/python2js_buffer.c
@@ -428,9 +428,9 @@ static enum shareable_enum
 _python2js_buffer_is_shareable(Py_buffer* buff)
 {
   char* invalid_codes = ">!qQ?";
-  for (int i = 0; i < 2; ++i) {
+  for (char* i = buff->format; *i != 0; ++i) {
     for (char* j = invalid_codes; *j != 0; ++j) {
-      if (buff->format[i] == *j) {
+      if (*i == *j) {
         return NOT_SHAREABLE;
       }
     }