Index: clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp
===================================================================
--- clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp
+++ clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp
@@ -742,8 +742,9 @@
     const tooling::DiagnosticMessage &M1 = LHS.Message;
     const tooling::DiagnosticMessage &M2 = RHS.Message;
 
-    return std::tie(M1.FilePath, M1.FileOffset, M1.Message) <
-           std::tie(M2.FilePath, M2.FileOffset, M2.Message);
+    return
+      std::tie(M1.FilePath, M1.FileOffset, LHS.DiagnosticName, M1.Message) <
+      std::tie(M2.FilePath, M2.FileOffset, RHS.DiagnosticName, M2.Message);
   }
 };
 struct EqualClangTidyError {
Index: clang-tools-extra/test/clang-tidy/duplicate-reports.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/duplicate-reports.cpp
@@ -0,0 +1,15 @@
+// RUN: %check_clang_tidy %s cert-err09-cpp,cert-err61-cpp %t
+
+void alwaysThrows() {
+  int ex = 42;
+  // CHECK-MESSAGES: warning: throw expression should throw anonymous temporary values instead [cert-err09-cpp]
+  // CHECK-MESSAGES: warning: throw expression should throw anonymous temporary values instead [cert-err61-cpp]
+  throw ex;
+}
+
+void doTheJob() {
+  try {
+    alwaysThrows();
+  } catch (int&) {
+  }
+}