Add support for writing through StreamInterface.

This adds method and tests for writing to a PDB stream.  With
this, even a PDB stream which is discontiguous can be treated
as a sequential stream of bytes for the purposes of writing.

Reviewed By: ruiu
Differential Revision: http://reviews.llvm.org/D21157

llvm-svn: 272369

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp b/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp
index bcfa55a8b01..07aebb7d739 100644
--- a/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp
+++ b/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp
@@ -28,6 +28,10 @@ public:
       return "The specified stream could not be loaded.";
     case raw_error_code::index_out_of_bounds:
       return "The specified item does not exist in the array.";
+    case raw_error_code::invalid_block_address:
+      return "The specified block address is not valid.";
+    case raw_error_code::not_writable:
+      return "The PDB does not support writing.";
     }
     llvm_unreachable("Unrecognized raw_error_code");
   }