1 files changed, 4 insertions, 0 deletions
diff --git a/clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp b/clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
index e91cc9573f7..25fc09288b0 100644
--- a/clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
+++ b/clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
@@ -72,6 +72,10 @@ void DefinitionsInHeadersCheck::registerMatchers(MatchFinder *Finder) {
 }
 
 void DefinitionsInHeadersCheck::check(const MatchFinder::MatchResult &Result) {
+  // Don't run the check in failing TUs.
+  if (Result.Context->getDiagnostics().hasErrorOccurred())
+    return;
+
   // C++ [basic.def.odr] p6:
   // There can be more than one definition of a class type, enumeration type,
   // inline function with external linkage, class template, non-static function