[llvm] r298127 - LTO: Work around libstdc++ version mismatch bug, see D31063 review thread.

[Peter Collingbourne via llvm-commits]

Author: pcc
Date: Fri Mar 17 16:49:09 2017
New Revision: 298127

URL: http://llvm.org/viewvc/llvm-project?rev=298127&view=rev
Log:
LTO: Work around libstdc++ version mismatch bug, see D31063 review thread.

Modified:
    llvm/trunk/lib/LTO/Caching.cpp

Modified: llvm/trunk/lib/LTO/Caching.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/LTO/Caching.cpp?rev=298127&r1=298126&r2=298127&view=diff
==============================================================================
--- llvm/trunk/lib/LTO/Caching.cpp (original)
+++ llvm/trunk/lib/LTO/Caching.cpp Fri Mar 17 16:49:09 2017
@@ -37,7 +37,10 @@ Expected<NativeObjectCache> lto::localCa
       return AddStreamFn();
     }
 
-    if (MBOrErr.getError() != std::errc::no_such_file_or_directory)
+    // FIXME: Workaround for libstdc++ version mismatch bug, see D31063 review
+    // thread.
+    if ((std::errc)MBOrErr.getError().value() !=
+        std::errc::no_such_file_or_directory)
       report_fatal_error(Twine("Failed to open cache file ") + EntryPath +
                          ": " + MBOrErr.getError().message() + "\n");