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//===--- StaticObjectExceptionCheck.cpp - clang-tidy-----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "StaticObjectExceptionCheck.h"
#include "../utils/Matchers.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace cert {
void StaticObjectExceptionCheck::registerMatchers(MatchFinder *Finder) {
if (!getLangOpts().CPlusPlus)
return;
// Match any static or thread_local variable declaration that is initialized
// with a constructor that can throw.
Finder->addMatcher(
varDecl(anyOf(hasThreadStorageDuration(), hasStaticStorageDuration()),
unless(hasAncestor(functionDecl())),
hasInitializer(ignoringImplicit(cxxConstructExpr(hasDeclaration(
cxxConstructorDecl(unless(isNoThrow())).bind("ctor"))))))
.bind("var"),
this);
}
void StaticObjectExceptionCheck::check(const MatchFinder::MatchResult &Result) {
const auto *VD = Result.Nodes.getNodeAs<VarDecl>("var");
const auto *Ctor = Result.Nodes.getNodeAs<CXXConstructorDecl>("ctor");
diag(VD->getLocation(),
"construction of %0 with %select{static|thread_local}1 storage "
"duration may throw an exception that cannot be caught")
<< VD << (VD->getStorageDuration() == SD_Static ? 0 : 1);
diag(Ctor->getLocation(), "possibly throwing constructor declared here",
DiagnosticIDs::Note);
}
} // namespace cert
} // namespace tidy
} // namespace clang
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