From: Chris Lattner <sabre@nondot.org>
Date: Mon, 27 Sep 2004 16:59:06 +0000 (+0000)
Subject: The system ranlib on darwin occasionally adds two extra newlines to the
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=56bc894d06b81fd27065ad73d69b1781d2fe4953;p=oota-llvm.git

The system ranlib on darwin occasionally adds two extra newlines to the
end of files, breaking the CFE build.  As a gross hack around this,
ignore any trailing garbage on bytecode files.  Thanks to Brian for digging
in and identifying the problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16525 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Bytecode/Reader/Reader.cpp b/lib/Bytecode/Reader/Reader.cpp
index 18780208e2b..d44003c73a1 100644
--- a/lib/Bytecode/Reader/Reader.cpp
+++ b/lib/Bytecode/Reader/Reader.cpp
@@ -2139,10 +2139,16 @@ void BytecodeReader::ParseBytecode(BufPtr Buf, unsigned Length,
       error("Expected Module Block! Type:" + utostr(Type) + ", Size:" 
             + utostr(Size));
     }
-    if (At + Size != MemEnd) {
+
+    // It looks like the darwin ranlib program is broken, and adds trailing
+    // garbage to the end of some bytecode files.  This hack allows the bc
+    // reader to ignore trailing garbage on bytecode files.
+    if (At + Size < MemEnd)
+      MemEnd = BlockEnd = At+Size;
+
+    if (At + Size != MemEnd)
       error("Invalid Top Level Block Length! Type:" + utostr(Type)
             + ", Size:" + utostr(Size));
-    }
 
     // Parse the module contents
     this->ParseModule();