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StaticObjectExceptionCheck.cpp
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1 //===--- StaticObjectExceptionCheck.cpp - clang-tidy-----------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "StaticObjectExceptionCheck.h"
11 #include "../utils/Matchers.h"
12 #include "clang/AST/ASTContext.h"
13 #include "clang/ASTMatchers/ASTMatchFinder.h"
14
15 using namespace clang::ast_matchers;
16
17 namespace clang {
18 namespace tidy {
19 namespace cert {
20
21 void StaticObjectExceptionCheck::registerMatchers(MatchFinder *Finder) {
22 if (!getLangOpts().CPlusPlus)
23 return;
24
25 // Match any static or thread_local variable declaration that is initialized
26 // with a constructor that can throw.
27 Finder->addMatcher(
28 varDecl(anyOf(hasThreadStorageDuration(), hasStaticStorageDuration()),
29 hasInitializer(cxxConstructExpr(hasDeclaration(
30 cxxConstructorDecl(unless(isNoThrow()))
31 .bind("ctor")))))
32 .bind("var"),
33 this);
34 }
35
36 void StaticObjectExceptionCheck::check(const MatchFinder::MatchResult &Result) {
37 const auto *VD = Result.Nodes.getNodeAs<VarDecl>("var");
38 const auto *Ctor = Result.Nodes.getNodeAs<CXXConstructorDecl>("ctor");
39
40 diag(VD->getLocation(),
41 "construction of %0 with %select{static|thread_local}1 storage "
42 "duration may throw an exception that cannot be caught")
43 << VD << (VD->getStorageDuration() == SD_Static ? 0 : 1);
44 diag(Ctor->getLocation(), "possibly throwing constructor declared here",
45 DiagnosticIDs::Note);
46 }
47
48 } // namespace cert
49 } // namespace tidy
50 } // namespace clang
Finder
std::unique_ptr< ast_matchers::MatchFinder > Finder
Definition: ClangTidy.cpp:188
StaticObjectExceptionCheck.h
Result
const NamedDecl * Result
Definition: USRFinder.cpp:121