From 829c4392e18260a07e3692cf57e42a768ff5612c Mon Sep 17 00:00:00 2001
From: Rui Ueyama <ruiu@google.com>
Date: Thu, 14 Nov 2013 22:09:08 +0000
Subject: Recognize 0x0000 as a COFF file magic.

Summary:
Some machine-type-neutral object files containing only undefined symbols
actually do exist in the Windows standard library. Need to recognize them
as COFF files.

Reviewers: Bigcheese

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2164

llvm-svn: 194734
---
 llvm/lib/Support/Path.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Support/Path.cpp b/llvm/lib/Support/Path.cpp
index 7fc9ab89672..dfa18aaa6d2 100644
--- a/llvm/lib/Support/Path.cpp
+++ b/llvm/lib/Support/Path.cpp
@@ -853,6 +853,9 @@ error_code has_magic(const Twine &path, const Twine &magic, bool &result) {
       if (Magic.size() >= sizeof(Expected) &&
           memcmp(Magic.data(), Expected, sizeof(Expected)) == 0)
         return file_magic::windows_resource;
+      // 0x0000 = COFF unknown machine type
+      if (Magic[1] == 0)
+        return file_magic::coff_object;
       break;
     }
     case 0xDE:  // 0x0B17C0DE = BC wraper
-- 
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