From ea71d197e05da8c72488f6bed68ac123066e53e5 Mon Sep 17 00:00:00 2001
From: Aaron Culliney <devnull@deadc0de.org>
Date: Sat, 21 Jun 2014 14:51:41 -0700
Subject: [PATCH] Handle unlikely overflow and silence clang warning

---
 src/zlib-helpers.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/zlib-helpers.c b/src/zlib-helpers.c
index 0ca50d26..8f4aaf4f 100644
--- a/src/zlib-helpers.c
+++ b/src/zlib-helpers.c
@@ -92,7 +92,14 @@ const char *def(const char* const src, const int expected_bytecount)
             }
 
             if (buflen > 0) {
-                size_t written = gzwrite(gzdest, buf, buflen);
+                unsigned int buflen_ = 0;
+                if (buflen > UINT_MAX) {
+                    ERRLOG("OOPS buffer is huge!");
+                    break;
+                } else {
+                    buflen_ = (unsigned int)buflen;
+                }
+                size_t written = gzwrite(gzdest, buf, buflen_);
                 if (written < buflen) {
                     ERRLOG("OOPS gzwrite ...");
                     break;