minix/external/bsd/llvm/dist/clang/examples/analyzer-plugin/MainCallChecker.cpp
Lionel Sambuc f4a2713ac8 Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
2014-07-28 17:05:57 +02:00

53 lines
1.5 KiB
C++

#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
#include "clang/StaticAnalyzer/Core/CheckerRegistry.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
using namespace clang;
using namespace ento;
namespace {
class MainCallChecker : public Checker < check::PreStmt<CallExpr> > {
mutable OwningPtr<BugType> BT;
public:
void checkPreStmt(const CallExpr *CE, CheckerContext &C) const;
};
} // end anonymous namespace
void MainCallChecker::checkPreStmt(const CallExpr *CE, CheckerContext &C) const {
const ProgramStateRef state = C.getState();
const LocationContext *LC = C.getLocationContext();
const Expr *Callee = CE->getCallee();
const FunctionDecl *FD = state->getSVal(Callee, LC).getAsFunctionDecl();
if (!FD)
return;
// Get the name of the callee.
IdentifierInfo *II = FD->getIdentifier();
if (!II) // if no identifier, not a simple C function
return;
if (II->isStr("main")) {
ExplodedNode *N = C.generateSink();
if (!N)
return;
if (!BT)
BT.reset(new BugType("call to main", "example analyzer plugin"));
BugReport *report = new BugReport(*BT, BT->getName(), N);
report->addRange(Callee->getSourceRange());
C.emitReport(report);
}
}
// Register plugin!
extern "C"
void clang_registerCheckers (CheckerRegistry &registry) {
registry.addChecker<MainCallChecker>("example.MainCallChecker", "Disallows calls to functions called main");
}
extern "C"
const char clang_analyzerAPIVersionString[] = CLANG_ANALYZER_API_VERSION_STRING;