From 25c910137abe33d02bf0d7b5c7a455eb2e4f3d2d Mon Sep 17 00:00:00 2001
From: Jason Molenda <jmolenda@apple.com>
Date: Fri, 26 Jun 2015 02:16:48 +0000
Subject: [PATCH] When the user specifies a corefile that is not readable, give
 them a meaningful error message instead of "Unable to find process plug-in
 for core file ...".

<rdar://problem/21255759>
<rdar://problem/21091522>
http://blog.ignoranthack.me/?p=204

llvm-svn: 240753
---
 lldb/source/Commands/CommandObjectTarget.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lldb/source/Commands/CommandObjectTarget.cpp b/lldb/source/Commands/CommandObjectTarget.cpp
index 7257ff36f4f8..448da0ede245 100644
--- a/lldb/source/Commands/CommandObjectTarget.cpp
+++ b/lldb/source/Commands/CommandObjectTarget.cpp
@@ -387,6 +387,12 @@ protected:
                     core_file.GetPath(core_path, sizeof(core_path));
                     if (core_file.Exists())
                     {
+                        if (!core_file.Readable())
+                        {
+                            result.AppendMessageWithFormat ("Core file '%s' is not readable.\n", core_path);
+                            result.SetStatus (eReturnStatusFailed);
+                            return false;
+                        }
                         FileSpec core_file_dir;
                         core_file_dir.GetDirectory() = core_file.GetDirectory();
                         target_sp->GetExecutableSearchPaths ().Append (core_file_dir);