76a21502fd
ClangCheckerRegistry is a very non-obvious, poorly documented, weird concept. It derives from CheckerRegistry, and is placed in lib/StaticAnalyzer/Frontend, whereas it's base is located in lib/StaticAnalyzer/Core. It was, from what I can imagine, used to circumvent the problem that the registry functions of the checkers are located in the clangStaticAnalyzerCheckers library, but that library depends on clangStaticAnalyzerCore. However, clangStaticAnalyzerFrontend depends on both of those libraries. One can make the observation however, that CheckerRegistry has no place in Core, it isn't used there at all! The only place where it is used is Frontend, which is where it ultimately belongs. This move implies that since include/clang/StaticAnalyzer/Checkers/ClangCheckers.h only contained a single function: class CheckerRegistry; void registerBuiltinCheckers(CheckerRegistry ®istry); it had to re purposed, as CheckerRegistry is no longer available to clangStaticAnalyzerCheckers. It was renamed to BuiltinCheckerRegistration.h, which actually describes it a lot better -- it does not contain the registration functions for checkers, but only those generated by the tblgen files. Differential Revision: https://reviews.llvm.org/D54436 llvm-svn: 349275
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
//=- NSAutoreleasePoolChecker.cpp --------------------------------*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a NSAutoreleasePoolChecker, a small checker that warns
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// about subpar uses of NSAutoreleasePool. Note that while the check itself
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// (in its current form) could be written as a flow-insensitive check, in
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// can be potentially enhanced in the future with flow-sensitive information.
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// It is also a good example of the CheckerVisitor interface.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
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#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
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#include "clang/StaticAnalyzer/Core/Checker.h"
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#include "clang/StaticAnalyzer/Core/CheckerManager.h"
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#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
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#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
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#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
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using namespace clang;
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using namespace ento;
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namespace {
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class NSAutoreleasePoolChecker
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: public Checker<check::PreObjCMessage> {
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mutable std::unique_ptr<BugType> BT;
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mutable Selector releaseS;
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public:
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void checkPreObjCMessage(const ObjCMethodCall &msg, CheckerContext &C) const;
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};
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} // end anonymous namespace
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void NSAutoreleasePoolChecker::checkPreObjCMessage(const ObjCMethodCall &msg,
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CheckerContext &C) const {
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if (!msg.isInstanceMessage())
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return;
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const ObjCInterfaceDecl *OD = msg.getReceiverInterface();
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if (!OD)
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return;
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if (!OD->getIdentifier()->isStr("NSAutoreleasePool"))
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return;
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if (releaseS.isNull())
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releaseS = GetNullarySelector("release", C.getASTContext());
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// Sending 'release' message?
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if (msg.getSelector() != releaseS)
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return;
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if (!BT)
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BT.reset(new BugType(this, "Use -drain instead of -release",
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"API Upgrade (Apple)"));
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ExplodedNode *N = C.generateNonFatalErrorNode();
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if (!N) {
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assert(0);
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return;
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}
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auto Report = llvm::make_unique<BugReport>(
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*BT, "Use -drain instead of -release when using NSAutoreleasePool and "
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"garbage collection", N);
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Report->addRange(msg.getSourceRange());
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C.emitReport(std::move(Report));
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}
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void ento::registerNSAutoreleasePoolChecker(CheckerManager &mgr) {
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if (mgr.getLangOpts().getGC() != LangOptions::NonGC)
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mgr.registerChecker<NSAutoreleasePoolChecker>();
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}
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