clang 17.0.0git
MainCallChecker.cpp
Go to the documentation of this file.
5
6using namespace clang;
7using namespace ento;
8
9namespace {
10class MainCallChecker : public Checker<check::PreStmt<CallExpr>> {
11 mutable std::unique_ptr<BugType> BT;
12
13public:
14 void checkPreStmt(const CallExpr *CE, CheckerContext &C) const;
15};
16} // end anonymous namespace
17
18void MainCallChecker::checkPreStmt(const CallExpr *CE,
19 CheckerContext &C) const {
20 const Expr *Callee = CE->getCallee();
21 const FunctionDecl *FD = C.getSVal(Callee).getAsFunctionDecl();
22
23 if (!FD)
24 return;
25
26 // Get the name of the callee.
27 IdentifierInfo *II = FD->getIdentifier();
28 if (!II) // if no identifier, not a simple C function
29 return;
30
31 if (II->isStr("main")) {
32 ExplodedNode *N = C.generateErrorNode();
33 if (!N)
34 return;
35
36 if (!BT)
37 BT.reset(new BugType(this, "call to main", "example analyzer plugin"));
38
39 auto report =
40 std::make_unique<PathSensitiveBugReport>(*BT, BT->getDescription(), N);
41 report->addRange(Callee->getSourceRange());
42 C.emitReport(std::move(report));
43 }
44}
45
46// Register plugin!
47extern "C" void clang_registerCheckers(CheckerRegistry &registry) {
48 registry.addChecker<MainCallChecker>(
49 "example.MainCallChecker", "Disallows calls to functions called main",
50 "");
51}
52
53extern "C" const char clang_analyzerAPIVersionString[] =
#define CLANG_ANALYZER_API_VERSION_STRING
void clang_registerCheckers(CheckerRegistry &registry)
const char clang_analyzerAPIVersionString[]
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2812
Expr * getCallee()
Definition: Expr.h:2962
This represents one expression.
Definition: Expr.h:110
Represents a function declaration or definition.
Definition: Decl.h:1919
One of these records is kept for each identifier that is lexed.
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
IdentifierInfo * getIdentifier() const
Get the identifier that names this declaration, if there is one.
Definition: Decl.h:268
Manages a set of available checkers for running a static analysis.
void addChecker(RegisterCheckerFn Fn, ShouldRegisterFunction sfn, StringRef FullName, StringRef Desc, StringRef DocsUri, bool IsHidden)
Adds a checker to the registry.
@ C
Languages that the frontend can parse and compile.