[include-cleaner] Bail out in the standalone tool for invalid ignore-headers

flag

diff --git a/clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp b/clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp
index c6cd7995d2e82959e63adad875d5b2963702b2ce..ae4d1e97414415529a2f353efbc7a50ceb8eab79 100644 (file)
--- a/clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp
+++ b/clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp
@@ -271,6 +271,8 @@ int main(int argc, const char **argv) {
     }
   }
   auto HeaderFilter = headerFilter();
+  if (!HeaderFilter)
+    return 1; // error already reported.
   ActionFactory Factory(HeaderFilter);
   return clang::tooling::ClangTool(OptionsParser->getCompilations(),
                                    OptionsParser->getSourcePathList())