From 81dd9639ede71ce6ca814eff07104a5b7d5be2a3 Mon Sep 17 00:00:00 2001
From: Justine Tunney <jtunney@gmail.com>
Date: Sat, 27 Jul 2024 18:34:21 -0700
Subject: [PATCH] Fix bug in tool/decode/zip

---
 tool/decode/zip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/decode/zip.c b/tool/decode/zip.c
index 6b4cf88b2..96a88ab2e 100644
--- a/tool/decode/zip.c
+++ b/tool/decode/zip.c
@@ -78,7 +78,7 @@ char *xiso8601(struct timespec ts) {
   ptr += snprintf(ptr, end - ptr, "%09ld", ts.tv_nsec);
   ptr += strftime(ptr, end - ptr, "%z", &tm);
   unassert(ptr + 1 <= end);
-  unassert(realloc_in_place(res, ptr - end) == res);
+  unassert(realloc_in_place(res, ptr + 1 - res) == res);
   return res;
 }