From 3a69090d70222f5a73aab8db16d3f7d0f282e37a Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Tue, 2 Nov 2010 23:19:55 +0000
Subject: [PATCH] Don't try to enforce MAXPATHLEN in sys::Path for Unix. OS's
 can check limits on their own.

llvm-svn: 118113
---
 lib/System/Unix/Path.inc | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/System/Unix/Path.inc b/lib/System/Unix/Path.inc
index b7afb8536d5..c90092001e3 100644
--- a/lib/System/Unix/Path.inc
+++ b/lib/System/Unix/Path.inc
@@ -96,10 +96,12 @@ Path::operator=(StringRef that) {
 
 bool
 Path::isValid() const {
-  // Check some obvious things
-  if (path.empty())
-    return false;
-  return path.length() < MAXPATHLEN;
+  // Empty paths are considered invalid here.
+  // This code doesn't check MAXPATHLEN because there's no need. Nothing in
+  // LLVM manipulates Paths with fixed-sizes arrays, and if the OS can't
+  // handle names longer than some limit, it'll report this on demand using
+  // ENAMETOLONG.
+  return !path.empty();
 }
 
 bool