From 898445cfd19904c83e9621dbf61f5bffb286fc37 Mon Sep 17 00:00:00 2001
From: wanabe <s.wanabe@gmail.com>
Date: Sun, 7 Mar 2021 21:22:47 +0900
Subject: [PATCH] Resume zstream if available [Bug #10961]

---
 ext/zlib/zlib.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 90fa5a6..1db5bdb 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -1095,6 +1095,12 @@ zstream_run(struct zstream *z, Bytef *src, long len, int flush)
                                RB_NOGVL_UBF_ASYNC_SAFE);
 #endif
 
+    /* retry if no exception is thrown */
+    if (err == Z_OK && args.interrupt) {
+       args.interrupt = 0;
+       goto loop;
+    }
+
     if (flush != Z_FINISH && err == Z_BUF_ERROR
 	    && z->stream.avail_out > 0) {
 	z->flags |= ZSTREAM_FLAG_IN_STREAM;