buffer: zero fill Buffer(num) by default

PR-URL: https://github.com/nodejs/node/pull/12141
Ref: https://github.com/nodejs/CTC/issues/89
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Prince John Wesley <princejohnwesley@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/test/parallel/test-buffer-zero-fill.js b/test/parallel/test-buffer-zero-fill.js
new file mode 100644
index 0000000000..adc0118691
--- /dev/null
+++ b/test/parallel/test-buffer-zero-fill.js
@@ -0,0 +1,14 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const Buffer = require('buffer').Buffer;
+
+const buf1 = Buffer(100);
+const buf2 = new Buffer(100);
+
+for (let n = 0; n < buf1.length; n++)
+  assert.strictEqual(buf1[n], 0);
+
+for (let n = 0; n < buf2.length; n++)
+  assert.strictEqual(buf2[n], 0);