Index: clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -60,6 +60,8 @@
   const ASTContext &Context = *Result.Context;
   const SourceManager &Source = Context.getSourceManager();
 
+  if (MatchedDecl->isInvalidDecl())
+    return;
   // We want to warn about cases where the type name
   // comes from a macro like this:
   //