1 files changed, 21 insertions, 0 deletions
diff --git a/build/clang-plugin/OverrideBaseCallUsageChecker.cpp b/build/clang-plugin/OverrideBaseCallUsageChecker.cpp
new file mode 100644
index 0000000000..34b9cd16a9
--- /dev/null
+++ b/build/clang-plugin/OverrideBaseCallUsageChecker.cpp
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "OverrideBaseCallUsageChecker.h"
+#include "CustomMatchers.h"
+
+void OverrideBaseCallUsageChecker::registerMatchers(MatchFinder *AstMatcher) {
+  AstMatcher->addMatcher(
+      cxxMethodDecl(isNonVirtual(), isRequiredBaseMethod()).bind("method"),
+      this);
+}
+
+void OverrideBaseCallUsageChecker::check(
+    const MatchFinder::MatchResult &Result) {
+  const char *Error =
+      "MOZ_REQUIRED_BASE_METHOD can be used only on virtual methods";
+  const CXXMethodDecl *Method = Result.Nodes.getNodeAs<CXXMethodDecl>("method");
+
+  diag(Method->getLocation(), Error, DiagnosticIDs::Error);
+}