nodejs
diff --git a/Collapse file
‎lib/zlib.js‎
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+5Lines changed: 5 additions & 0 deletions b/Collapse file
‎lib/zlib.js‎
Copy file name to clipboardExpand all lines: lib/zlib.js
+5Lines changed: 5 additions & 0 deletions
diff --git a/Collapse file
‎test/parallel/test-zlib-empty-buffer.js‎
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+26Lines changed: 26 additions & 0 deletions b/Collapse file
‎test/parallel/test-zlib-empty-buffer.js‎
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+26Lines changed: 26 additions & 0 deletions
@@ -95,6 +95,8 @@ function zlibBufferOnEnd() {
   var err;
   if (this.nread >= kMaxLength) {
     err = new errors.RangeError('ERR_BUFFER_TOO_LARGE');
+  } else if (this.nread === 0) {
+    buf = Buffer.alloc(0);
   } else {
     var bufs = this.buffers;
     buf = (bufs.length === 1 ? bufs[0] : Buffer.concat(bufs, this.nread));
@@ -485,6 +487,9 @@ function processChunkSync(self, chunk, flushFlag) {
 
   _close(self);
 
+  if (nread === 0)
+    return Buffer.alloc(0);
+
   return (buffers.length === 1 ? buffers[0] : Buffer.concat(buffers, nread));
 }
 
 
@@ -0,0 +1,26 @@
+'use strict';
+const common = require('../common');
+const zlib = require('zlib');
+const { inspect, promisify } = require('util');
+const assert = require('assert');
+const emptyBuffer = new Buffer(0);
+
+common.crashOnUnhandledRejection();
+
+(async function() {
+  for (const [ compress, decompress, method ] of [
+    [ zlib.deflateRawSync, zlib.inflateRawSync, 'raw sync' ],
+    [ zlib.deflateSync, zlib.inflateSync, 'deflate sync' ],
+    [ zlib.gzipSync, zlib.gunzipSync, 'gzip sync' ],
+    [ promisify(zlib.deflateRaw), promisify(zlib.inflateRaw), 'raw' ],
+    [ promisify(zlib.deflate), promisify(zlib.inflate), 'deflate' ],
+    [ promisify(zlib.gzip), promisify(zlib.gunzip), 'gzip' ]
+  ]) {
+    const compressed = await compress(emptyBuffer);
+    const decompressed = await decompress(compressed);
+    assert.deepStrictEqual(
+      emptyBuffer, decompressed,
+      `Expected ${inspect(compressed)} to match ${inspect(decompressed)} ` +
+      `to match for ${method}`);
+  }
+})();