zlib: check if the stream is destroyed before push (8.x)

lib/zlib.js

@@ -431,6 +431,9 @@ Zlib.prototype._processChunk = function _processChunk(chunk, flushFlag, cb) {
     if (self._hadError)
       return;
 
+    if (self.destroyed)
+      return;
+
     var have = availOutBefore - availOutAfter;
     assert(have >= 0, 'have should not go down');
 

test/parallel/test-zlib-destroy-pipe.js

@@ -0,0 +1,21 @@
+'use strict';
+
+const common = require('../common');
+const zlib = require('zlib');
+const { Writable } = require('stream');
+
+// verify that the zlib transform does not error in case
+// it is destroyed with data still in flight
+
+const ts = zlib.createGzip();
+
+const ws = new Writable({
+  write: common.mustCall((chunk, enc, cb) => {
+    setImmediate(cb);
+    ts.destroy();
+  })
+});
+
+const buf = Buffer.allocUnsafe(1024 * 1024 * 20);
+ts.end(buf);
+ts.pipe(ws);