118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
//===-- MPIBugReporter.cpp - bug reporter -----------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file defines prefabricated reports which are emitted in
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/// case of MPI related bugs, detected by path-sensitive analysis.
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///
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//===----------------------------------------------------------------------===//
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#include "MPIBugReporter.h"
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#include "MPIChecker.h"
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#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
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namespace clang {
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namespace ento {
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namespace mpi {
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void MPIBugReporter::reportDoubleNonblocking(
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const CallEvent &MPICallEvent, const ento::mpi::Request &Req,
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const MemRegion *const RequestRegion,
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const ExplodedNode *const ExplNode,
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BugReporter &BReporter) const {
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std::string ErrorText;
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ErrorText = "Double nonblocking on request " +
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RequestRegion->getDescriptiveName() + ". ";
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auto Report = std::make_unique<PathSensitiveBugReport>(
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*DoubleNonblockingBugType, ErrorText, ExplNode);
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Report->addRange(MPICallEvent.getSourceRange());
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SourceRange Range = RequestRegion->sourceRange();
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if (Range.isValid())
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Report->addRange(Range);
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Report->addVisitor(std::make_unique<RequestNodeVisitor>(
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RequestRegion, "Request is previously used by nonblocking call here. "));
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Report->markInteresting(RequestRegion);
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BReporter.emitReport(std::move(Report));
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}
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void MPIBugReporter::reportMissingWait(
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const ento::mpi::Request &Req, const MemRegion *const RequestRegion,
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const ExplodedNode *const ExplNode,
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BugReporter &BReporter) const {
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std::string ErrorText{"Request " + RequestRegion->getDescriptiveName() +
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" has no matching wait. "};
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auto Report = std::make_unique<PathSensitiveBugReport>(*MissingWaitBugType,
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ErrorText, ExplNode);
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SourceRange Range = RequestRegion->sourceRange();
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if (Range.isValid())
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Report->addRange(Range);
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Report->addVisitor(std::make_unique<RequestNodeVisitor>(
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RequestRegion, "Request is previously used by nonblocking call here. "));
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Report->markInteresting(RequestRegion);
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BReporter.emitReport(std::move(Report));
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}
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void MPIBugReporter::reportUnmatchedWait(
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const CallEvent &CE, const clang::ento::MemRegion *const RequestRegion,
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const ExplodedNode *const ExplNode,
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BugReporter &BReporter) const {
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std::string ErrorText{"Request " + RequestRegion->getDescriptiveName() +
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" has no matching nonblocking call. "};
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auto Report = std::make_unique<PathSensitiveBugReport>(*UnmatchedWaitBugType,
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ErrorText, ExplNode);
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Report->addRange(CE.getSourceRange());
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SourceRange Range = RequestRegion->sourceRange();
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if (Range.isValid())
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Report->addRange(Range);
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BReporter.emitReport(std::move(Report));
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}
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PathDiagnosticPieceRef
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MPIBugReporter::RequestNodeVisitor::VisitNode(const ExplodedNode *N,
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BugReporterContext &BRC,
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PathSensitiveBugReport &BR) {
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if (IsNodeFound)
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return nullptr;
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const Request *const Req = N->getState()->get<RequestMap>(RequestRegion);
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assert(Req && "The region must be tracked and alive, given that we've "
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"just emitted a report against it");
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const Request *const PrevReq =
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N->getFirstPred()->getState()->get<RequestMap>(RequestRegion);
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// Check if request was previously unused or in a different state.
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if (!PrevReq || (Req->CurrentState != PrevReq->CurrentState)) {
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IsNodeFound = true;
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ProgramPoint P = N->getFirstPred()->getLocation();
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PathDiagnosticLocation L =
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PathDiagnosticLocation::create(P, BRC.getSourceManager());
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return std::make_shared<PathDiagnosticEventPiece>(L, ErrorText);
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}
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return nullptr;
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}
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} // end of namespace: mpi
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} // end of namespace: ento
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} // end of namespace: clang
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