1 files changed, 34 insertions, 0 deletions
diff --git a/build/build-clang/clang-tidy-ci.patch b/build/build-clang/clang-tidy-ci.patch
new file mode 100644
index 0000000000..6c31752136
--- /dev/null
+++ b/build/build-clang/clang-tidy-ci.patch
@@ -0,0 +1,34 @@
+diff --git a/clang-tools-extra/clang-tidy/ClangTidy.cpp b/clang-tools-extra/clang-tidy/ClangTidy.cpp
+index 7de313ad4da6..697f98c362d1 100644
+--- a/clang-tools-extra/clang-tidy/ClangTidy.cpp
++++ b/clang-tools-extra/clang-tidy/ClangTidy.cpp
+@@ -432,6 +432,7 @@ ClangTidyASTConsumerFactory::createASTConsumer(
+ 
+   for (auto &Check : Checks) {
+     Check->registerMatchers(&*Finder);
++    Check->registerPPCallbacks(Compiler);
+     Check->registerPPCallbacks(*SM, PP, ModuleExpanderPP);
+   }
+ 
+diff --git a/clang-tools-extra/clang-tidy/ClangTidyCheck.h b/clang-tools-extra/clang-tidy/ClangTidyCheck.h
+index 9b41e5836de7..d8938b8fe05e 100644
+--- a/clang-tools-extra/clang-tidy/ClangTidyCheck.h
++++ b/clang-tools-extra/clang-tidy/ClangTidyCheck.h
+@@ -20,6 +20,7 @@
+ 
+ namespace clang {
+ 
++class CompilerInstance;
+ class SourceManager;
+ 
+ namespace tidy {
+@@ -69,6 +70,9 @@ public:
+     return true;
+   }
+ 
++  /// This has been deprecated in clang 9 - needed by mozilla-must-override
++  virtual void registerPPCallbacks(CompilerInstance &Compiler) {}
++
+   /// Override this to register ``PPCallbacks`` in the preprocessor.
+   ///
+   /// This should be used for clang-tidy checks that analyze preprocessor-