Clang plugin to check that unstable types are not used in IPC.

tools/clang/plugins/FindBadConstructsAction.cpp

Index: tools/clang/plugins/FindBadConstructsAction.cpp
diff --git a/tools/clang/plugins/FindBadConstructsAction.cpp b/tools/clang/plugins/FindBadConstructsAction.cpp
index 67622970519689886fafe0a9e4acdf95179b252f..1c0316941f1180eec42943e2aafbf4ebd1a3db4a 100644
--- a/tools/clang/plugins/FindBadConstructsAction.cpp
+++ b/tools/clang/plugins/FindBadConstructsAction.cpp
@@ -22,6 +22,9 @@ class PluginConsumer : public ASTConsumer {
 
   void HandleTranslationUnit(clang::ASTContext& context) override {
     visitor_.TraverseDecl(context.getTranslationUnitDecl());
+    if (auto checker = visitor_.ipc_checker()) {
+      checker->Visit(context);
+    }
   }
 
  private:
@@ -63,6 +66,8 @@ bool FindBadConstructsAction::ParseArgs(const CompilerInstance& instance,
       options_.check_templates = true;
     } else if (args[i] == "follow-macro-expansion") {
       options_.follow_macro_expansion = true;
+    } else if (args[i] == "check-ipc") {
+      options_.check_ipc = true;
     } else {
       parsed = false;
       llvm::errs() << "Unknown clang plugin argument: " << args[i] << "\n";