Vendor import of clang trunk r241361:

https://llvm.org/svn/llvm-project/cfe/trunk@241361

1 files changed, 21 insertions, 0 deletions

diff --git a/lib/Basic/Diagnostic.cpp b/lib/Basic/Diagnostic.cpp
index 7f5a15d..f89caf7 100644
--- a/lib/Basic/Diagnostic.cpp
+++ b/lib/Basic/Diagnostic.cpp
@@ -24,6 +24,27 @@
 
 using namespace clang;
 
+const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
+                                           DiagNullabilityKind nullability) {
+  StringRef string;
+  switch (nullability.first) {
+  case NullabilityKind::NonNull:
+    string = nullability.second ? "'nonnull'" : "'_Nonnull'";
+    break;
+
+  case NullabilityKind::Nullable:
+    string = nullability.second ? "'nullable'" : "'_Nullable'";
+    break;
+
+  case NullabilityKind::Unspecified:
+    string = nullability.second ? "'null_unspecified'" : "'_Null_unspecified'";
+    break;
+  }
+
+  DB.AddString(string);
+  return DB;
+}
+
 static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT,
                             StringRef Modifier, StringRef Argument,
                             ArrayRef<DiagnosticsEngine::ArgumentValue> PrevArgs,