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6d8e966512
Introduced a new check that finds cases when an uninstantiated virtual member function in a template class causes cross-compiler incompatibility.
45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
//===--- TemplateVirtualMemberFunctionCheck.cpp - clang-tidy --------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "TemplateVirtualMemberFunctionCheck.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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using namespace clang::ast_matchers;
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namespace clang::tidy::portability {
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namespace {
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AST_MATCHER(CXXMethodDecl, isUsed) { return Node.isUsed(); }
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} // namespace
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void TemplateVirtualMemberFunctionCheck::registerMatchers(MatchFinder *Finder) {
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Finder->addMatcher(
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cxxMethodDecl(ofClass(classTemplateSpecializationDecl(
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unless(isExplicitTemplateSpecialization()))
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.bind("specialization")),
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isVirtual(), unless(isUsed()),
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unless(cxxDestructorDecl(isDefaulted())))
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.bind("method"),
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this);
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}
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void TemplateVirtualMemberFunctionCheck::check(
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const MatchFinder::MatchResult &Result) {
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const auto *ImplicitSpecialization =
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Result.Nodes.getNodeAs<ClassTemplateSpecializationDecl>("specialization");
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const auto *MethodDecl = Result.Nodes.getNodeAs<CXXMethodDecl>("method");
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diag(MethodDecl->getLocation(),
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"unspecified virtual member function instantiation; the virtual "
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"member function is not instantiated but it might be with a "
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"different compiler");
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diag(ImplicitSpecialization->getPointOfInstantiation(),
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"template instantiated here", DiagnosticIDs::Note);
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}
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} // namespace clang::tidy::portability
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