[lld] r191070 - Fallback to the default stringize function to show some meaningful error message.

[Rui Ueyama]

Author: ruiu
Date: Thu Sep 19 22:32:27 2013
New Revision: 191070

URL: http://llvm.org/viewvc/llvm-project?rev=191070&view=rev
Log:
Fallback to the default stringize function to show some meaningful error message.

GNU LD driver only understood no_such_file_or_directory error and was showing
just "Unknown Error" for any other type of error. With this patch, the driver
now prints file name and error message string by default.

Modified:
    lld/trunk/lib/Driver/GnuLdDriver.cpp

Modified: lld/trunk/lib/Driver/GnuLdDriver.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/Driver/GnuLdDriver.cpp?rev=191070&r1=191069&r2=191070&view=diff
==============================================================================
--- lld/trunk/lib/Driver/GnuLdDriver.cpp (original)
+++ lld/trunk/lib/Driver/GnuLdDriver.cpp Thu Sep 19 22:32:27 2013
@@ -87,17 +87,12 @@ llvm::ErrorOr<StringRef> ELFFileNode::pa
 }
 
 std::string ELFFileNode::errStr(llvm::error_code errc) {
-  std::string errorMsg;
   if (errc == llvm::errc::no_such_file_or_directory) {
     if (_isDashlPrefix)
-      errorMsg = (Twine("Unable to find library -l") + _path).str();
-    else
-      errorMsg = (Twine("Unable to find file ") + _path).str();
+      return (Twine("Unable to find library -l") + _path).str();
+    return (Twine("Unable to find file ") + _path).str();
   }
-  else {
-    return "Unknown Error";
-  }
-  return std::move(errorMsg);
+  return FileNode::errStr(errc);
 }
 
 bool GnuLdDriver::linkELF(int argc, const char *argv[],