1//===-- VariadicFunctionDefCheck.cpp - clang-tidy -------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "VariadicFunctionDefCheck.h"
10#include "clang/ASTMatchers/ASTMatchFinder.h"
11
12using namespace clang::ast_matchers;
13
14namespace clang::tidy::cert {
15
16void VariadicFunctionDefCheck::registerMatchers(MatchFinder *Finder) {
17 // We only care about function *definitions* that are variadic, and do not
18 // have extern "C" language linkage.
19 Finder->addMatcher(
20 NodeMatch: functionDecl(isDefinition(), isVariadic(), unless(isExternC()))
21 .bind(ID: "func"),
22 Action: this);
23}
24
25void VariadicFunctionDefCheck::check(const MatchFinder::MatchResult &Result) {
26 const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(ID: "func");
27
28 diag(FD->getLocation(),
29 "do not define a C-style variadic function; consider using a function "
30 "parameter pack or currying instead");
31}
32
33} // namespace clang::tidy::cert
34

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source code of clang-tools-extra/clang-tidy/cert/VariadicFunctionDefCheck.cpp