[clang-tidy] Ignore statements inside a template instantiation.

[alexfh]

LG with a nit.

test/clang-tidy/modernize-make-unique.cpp

459

The check_clang_tidy script specifies -implicit-check-not='{{warning:|error:}}', so verifying the lack of messages is not necessary (there's no such thing for fixes, since they verify the end state, not the changes; but the lack of messages implies the lack of fixes).

[hokein]

Remove the CHECK-MESSAGE-NOT.

clang-tidy/modernize/MakeSmartPtrCheck.cpp

void MakeSmartPtrCheck::registerMatchers(ast_matchers::MatchFinder *Finder) {
   Finder->addMatcher(
       cxxBindTemporaryExpr(has(ignoringParenImpCasts(
           cxxConstructExpr(
               hasType(getSmartPointerTypeMatcher()), argumentCountIs(1),
               hasArgument(0,
                           cxxNewExpr(hasType(pointsTo(qualType(hasCanonicalType(
                                          equalsBoundNode(PointerType))))),
                                      CanCallCtor)
-                              .bind(NewExpression)))
+                              .bind(NewExpression)),
+              unless(isInTemplateInstantiation()))
               .bind(ConstructorCall)))),
       this);
 
   Finder->addMatcher(
       cxxMemberCallExpr(
           thisPointerType(getSmartPointerTypeMatcher()),
           callee(cxxMethodDecl(hasName("reset"))),
-          hasArgument(0, cxxNewExpr(CanCallCtor).bind(NewExpression)))
+          hasArgument(0, cxxNewExpr(CanCallCtor).bind(NewExpression)),
+          unless(isInTemplateInstantiation()))
           .bind(ResetCall),
       this);
 }
 
 void MakeSmartPtrCheck::check(const MatchFinder::MatchResult &Result) {
   // 'smart_ptr' refers to 'std::shared_ptr' or 'std::unique_ptr' or other
   // pointer, 'make_smart_ptr' refers to 'std::make_shared' or
   // 'std::make_unique' or other function that creates smart_ptr.

test/clang-tidy/modernize-make-unique.cpp

void foo() {
     this->reset(new Foo);
     // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: use std::make_unique instead
     // CHECK-FIXES: *this = std::make_unique<Foo>();
     (*this).reset(new Foo);
     // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: use std::make_unique instead
     // CHECK-FIXES: (*this) = std::make_unique<Foo>();
   }
 };
+
+// Ignore statements inside a template instantiation.
+template<typename T>
+void template_fun(T* t) {
+  std::unique_ptr<T> t2 = std::unique_ptr<T>(new T);
+  t2.reset(new T);
+}
+
+void invoke_template() {
+  Foo* foo;
+  template_fun(foo);
+}