From cabaff820674700d4ca1951dc059b51fcf852d48 Mon Sep 17 00:00:00 2001
From: Chris Johns <chrisj@rtems.org>
Date: Fri, 13 Apr 2018 13:02:51 +1000
Subject: sb/path: Walk up to root checking if a path is writable.

A dirname of / is / so the path will never have a length of 0.

Close #3392
---
 source-builder/sb/path.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source-builder/sb/path.py b/source-builder/sb/path.py
index f851139..e2fd3d4 100644
--- a/source-builder/sb/path.py
+++ b/source-builder/sb/path.py
@@ -143,7 +143,7 @@ def iswritable(path):
 
 def ispathwritable(path):
     path = shell(path)
-    while len(path) != 0:
+    while len(path) > 1:
         if exists(path):
             return iswritable(path)
         path = dirname(path)
-- 
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