From a0cb04b0b09fe572577f813bb1a729e242ea2e22 Mon Sep 17 00:00:00 2001
From: JP Richardson <jprichardson@gmail.com>
Date: Mon, 18 Apr 2016 03:52:19 -0500
Subject: [PATCH] (Closes #93) libs/mkdirs: prevent stack overflow if drive is
 not mounted in Windows

---
 lib/mkdirs/__tests__/issue-93.test.js | 36 +++++++++++++++++++++++++++
 lib/mkdirs/mkdirs-sync.js             |  3 ++-
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 lib/mkdirs/__tests__/issue-93.test.js

diff --git a/lib/mkdirs/__tests__/issue-93.test.js b/lib/mkdirs/__tests__/issue-93.test.js
new file mode 100644
index 00000000..f7fc1fb2
--- /dev/null
+++ b/lib/mkdirs/__tests__/issue-93.test.js
@@ -0,0 +1,36 @@
+var assert = require('assert')
+var path = require('path')
+var os = require('os')
+var fse = require(process.cwd())
+
+/* global before, describe, it */
+
+describe('mkdirp: issue-93, win32, when drive does not exist, it should return a cleaner error', function () {
+  var TEST_DIR
+
+  // only seems to be an issue on Windows.
+  if (process.platform !== 'win32') return
+
+  before(function (done) {
+    TEST_DIR = path.join(os.tmpdir(), 'tests', 'fs-extra', 'mkdirp-issue-93')
+    fse.emptyDir(TEST_DIR, function (err) {
+      assert.ifError(err)
+      done()
+    })
+  })
+
+  it('should return a cleaner error than inifinite loop, stack crash', function (done) {
+    var file = 'R:\\afasd\\afaff\\fdfd' // hopefully drive 'r' does not exist on appveyor
+    fse.mkdirp(file, function (err) {
+      assert.strictEqual(err.code, 'ENOENT')
+
+      try {
+        fse.mkdirsSync(file)
+      } catch (err) {
+        assert.strictEqual(err.code, 'ENOENT')
+      }
+
+      done()
+    })
+  })
+})
diff --git a/lib/mkdirs/mkdirs-sync.js b/lib/mkdirs/mkdirs-sync.js
index 2dc4f231..138d56ce 100644
--- a/lib/mkdirs/mkdirs-sync.js
+++ b/lib/mkdirs/mkdirs-sync.js
@@ -23,7 +23,8 @@ function mkdirsSync (p, opts, made) {
     made = made || p
   } catch (err0) {
     switch (err0.code) {
-      case 'ENOENT' :
+      case 'ENOENT':
+        if (path.dirname(p) === p) throw err0
         made = mkdirsSync(path.dirname(p), opts, made)
         mkdirsSync(p, opts, made)
         break