exclude system header and update test flag

Author: MichelleCDjunaidi

clang-tools-extra/clang-tidy/bugprone/IncorrectEnableSharedFromThisCheck.cpp

@@ -27,6 +27,7 @@ void IncorrectEnableSharedFromThisCheck::registerMatchers(MatchFinder *Finder) {
           .bind("base_rec")));
   Finder->addMatcher(
       cxxRecordDecl(
+          unless(isExpansionInSystemHeader()),
           hasDirectBase(cxxBaseSpecifier(unless(isPublic()), hasType(QType))
                             .bind("base")))
           .bind("derived"),

clang-tools-extra/test/clang-tidy/checkers/bugprone/incorrect-enable-shared-from-this.cpp

@@ -1,4 +1,4 @@
-// RUN: %check_clang_tidy -std=c++11 %s bugprone-incorrect-enable-shared-from-this %t
+// RUN: %check_clang_tidy -std=c++11-or-later %s bugprone-incorrect-enable-shared-from-this %t
 
 // NOLINTBEGIN
 namespace std {