build/clang-plugin/TrivialCtorDtorChecker.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "TrivialCtorDtorChecker.h"
   6 #include "CustomMatchers.h"
   7
   8 void TrivialCtorDtorChecker::registerMatchers(MatchFinder *AstMatcher) {
   9   AstMatcher->addMatcher(cxxRecordDecl(hasTrivialCtorDtor()).bind("node"),
  10                          this);
  11 }
  12
  13 void TrivialCtorDtorChecker::check(const MatchFinder::MatchResult &Result) {
  14   const char *Error = "class %0 must have trivial constructors and destructors";
  15   const CXXRecordDecl *Node = Result.Nodes.getNodeAs<CXXRecordDecl>("node");
  16
  17   if (!Node->hasDefinition()) {
  18     return;
  19   }
  20
  21   // We need to accept non-constexpr trivial constructors as well. This occurs
  22   // when a struct contains pod members, which will not be initialized. As
  23   // constexpr values are initialized, the constructor is non-constexpr.
  24   bool BadCtor = !(Node->hasConstexprDefaultConstructor() ||
  25                    Node->hasTrivialDefaultConstructor());
  26   bool BadDtor = !Node->hasTrivialDestructor();
  27   if (BadCtor || BadDtor)
  28     diag(Node->getBeginLoc(), Error, DiagnosticIDs::Error) << Node;
  29 }