From 5422eb8d4ecd313c3164d8607e7fa37d1e6fa0b2 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Mon, 7 Aug 2017 17:12:11 +0200
Subject: [PATCH] zlib: fix crash when initializing failed
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Unset `mode_` when initializing the zlib stream failed, so that
we don’t try to call the zlib end functions (`deflateEnd()` etc.)
when cleaning up in `ZCtx::Close()`.

Fixes: https://github.com/nodejs/node/issues/14178
Ref: https://github.com/nodejs/node/pull/13098
Backport-PR-URL: https://github.com/nodejs/node/pull/14860
PR-URL: https://github.com/nodejs/node/pull/14666
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
---
 src/node_zlib.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index 66a6a476a7c7b2..96c0376f895bbc 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -480,6 +480,7 @@ class ZCtx : public AsyncWrap {
         delete[] dictionary;
         ctx->dictionary_ = nullptr;
       }
+      ctx->mode_ = NONE;
       ctx->env()->ThrowError("Init error");
     }
   }