From ed1610791c0c681ee562bb3997e0f29bfae11b2d Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Sun, 2 Feb 2025 11:04:40 -0800
Subject: [PATCH] Revert previous commit, restoring the memcpy() call.

The reported issue was due to an error in their test code, not in
inflate. This use of memcpy() in inflate is correct.
---
 inflate.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/inflate.c b/inflate.c
index 76bb8b95..4feac091 100644
--- a/inflate.c
+++ b/inflate.c
@@ -884,12 +884,12 @@ int ZEXPORT inflate(z_streamp strm, int flush) {
                 if (copy > have) copy = have;
                 if (copy > left) copy = left;
                 if (copy == 0) goto inf_leave;
+                zmemcpy(put, next, copy);
                 have -= copy;
+                next += copy;
                 left -= copy;
+                put += copy;
                 state->length -= copy;
-                do {
-                    *put++ = *next++;
-                } while (--copy);
                 break;
             }
             Tracev((stderr, "inflate:       stored end\n"));