From 1b73ffe30bbd7feb974f002d43b34e018cf63a1c Mon Sep 17 00:00:00 2001
From: JP Richardson <jprichardson@gmail.com>
Date: Sun, 17 Apr 2016 01:47:08 -0500
Subject: [PATCH] (#93, #209) prevent stack overflow if bad dir on win32

---
 lib/mkdirs/__tests__/README.md        |  1 -
 lib/mkdirs/__tests__/issue-93.test.js | 36 +++++++++++++++++++++++++++
 lib/mkdirs/mkdirs-sync.js             |  1 +
 3 files changed, 37 insertions(+), 1 deletion(-)
 delete mode 100644 lib/mkdirs/__tests__/README.md
 create mode 100644 lib/mkdirs/__tests__/issue-93.test.js

diff --git a/lib/mkdirs/__tests__/README.md b/lib/mkdirs/__tests__/README.md
deleted file mode 100644
index a211103b..00000000
--- a/lib/mkdirs/__tests__/README.md
+++ /dev/null
@@ -1 +0,0 @@
-These tests imported from https://github.com/substack/node-mkdirp.
\ No newline at end of file
diff --git a/lib/mkdirs/__tests__/issue-93.test.js b/lib/mkdirs/__tests__/issue-93.test.js
new file mode 100644
index 00000000..c6c33f77
--- /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..b4e4a9c1 100644
--- a/lib/mkdirs/mkdirs-sync.js
+++ b/lib/mkdirs/mkdirs-sync.js
@@ -24,6 +24,7 @@ function mkdirsSync (p, opts, made) {
   } catch (err0) {
     switch (err0.code) {
       case 'ENOENT' :
+        if (path.dirname(p) === p) throw err0
         made = mkdirsSync(path.dirname(p), opts, made)
         mkdirsSync(p, opts, made)
         break