[Basic] Add a DiagnosticError llvm::ErrorInfo subclass

Clang's DiagnosticError is an llvm::Error payload that stores a partial
diagnostic and its location. I'll be using it in the refactoring engine.

Differential Revision: https://reviews.llvm.org/D36969

llvm-svn: 311778

1 files changed, 4 insertions, 1 deletions

diff --git a/clang/lib/Basic/Diagnostic.cpp b/clang/lib/Basic/Diagnostic.cpp
index c355445dc1e..47f6a139b15 100644
--- a/clang/lib/Basic/Diagnostic.cpp
+++ b/clang/lib/Basic/Diagnostic.cpp
@@ -11,8 +11,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "clang/Basic/CharInfo.h"
 #include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/CharInfo.h"
+#include "clang/Basic/DiagnosticError.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/IdentifierTable.h"
 #include "clang/Basic/PartialDiagnostic.h"
@@ -1050,3 +1051,5 @@ PartialDiagnostic::StorageAllocator::~StorageAllocator() {
           llvm::CrashRecoveryContext::isRecoveringFromCrash()) &&
          "A partial is on the lam");
 }
+
+char DiagnosticError::ID;