| 1 | //===--- ExceptionEscapeCheck.cpp - clang-tidy ----------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "ExceptionEscapeCheck.h" |
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| 10 | #include "clang/AST/Stmt.h" |
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| 11 | #include "clang/AST/StmtOpenMP.h" |
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| 12 | #include "clang/ASTMatchers/ASTMatchFinder.h" |
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| 13 | #include "clang/ASTMatchers/ASTMatchers.h" |
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| 14 | |
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| 15 | using namespace clang::ast_matchers; |
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| 16 | |
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| 17 | namespace clang::tidy::openmp { |
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| 18 | |
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| 19 | ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name, |
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| 20 | ClangTidyContext *Context) |
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| 21 | : ClangTidyCheck(Name, Context), |
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| 22 | RawIgnoredExceptions(Options.get(LocalName: "IgnoredExceptions" , Default: "" )) { |
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| 23 | llvm::SmallVector<StringRef, 8> IgnoredExceptionsVec; |
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| 24 | |
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| 25 | llvm::StringSet<> IgnoredExceptions; |
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| 26 | StringRef(RawIgnoredExceptions).split(A&: IgnoredExceptionsVec, Separator: "," , MaxSplit: -1, KeepEmpty: false); |
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| 27 | llvm::transform(Range&: IgnoredExceptionsVec, d_first: IgnoredExceptionsVec.begin(), |
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| 28 | F: [](StringRef S) { return S.trim(); }); |
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| 29 | IgnoredExceptions.insert_range(R&: IgnoredExceptionsVec); |
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| 30 | Tracer.ignoreExceptions(ExceptionNames: std::move(IgnoredExceptions)); |
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| 31 | Tracer.ignoreBadAlloc(ShallIgnore: true); |
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| 32 | } |
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| 33 | |
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| 34 | void ExceptionEscapeCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) { |
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| 35 | Options.store(Options&: Opts, LocalName: "IgnoredExceptions" , Value: RawIgnoredExceptions); |
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| 36 | } |
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| 37 | |
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| 38 | void ExceptionEscapeCheck::registerMatchers(MatchFinder *Finder) { |
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| 39 | Finder->addMatcher(NodeMatch: ompExecutableDirective( |
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| 40 | unless(isStandaloneDirective()), |
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| 41 | hasStructuredBlock(InnerMatcher: stmt().bind(ID: "structured-block" ))) |
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| 42 | .bind(ID: "directive" ), |
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| 43 | Action: this); |
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| 44 | } |
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| 45 | |
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| 46 | void ExceptionEscapeCheck::check(const MatchFinder::MatchResult &Result) { |
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| 47 | const auto *Directive = |
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| 48 | Result.Nodes.getNodeAs<OMPExecutableDirective>(ID: "directive" ); |
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| 49 | assert(Directive && "Expected to match some OpenMP Executable directive." ); |
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| 50 | const auto *StructuredBlock = |
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| 51 | Result.Nodes.getNodeAs<Stmt>(ID: "structured-block" ); |
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| 52 | assert(StructuredBlock && "Expected to get some OpenMP Structured Block." ); |
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| 53 | |
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| 54 | if (Tracer.analyze(Stmt: StructuredBlock).getBehaviour() != |
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| 55 | utils::ExceptionAnalyzer::State::Throwing) |
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| 56 | return; // No exceptions have been proven to escape out of the struc. block. |
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| 57 | |
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| 58 | // FIXME: We should provide more information about the exact location where |
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| 59 | // the exception is thrown, maybe the full path the exception escapes. |
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| 60 | |
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| 61 | diag(Loc: StructuredBlock->getBeginLoc(), |
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| 62 | Description: "an exception thrown inside of the OpenMP '%0' region is not caught in " |
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| 63 | "that same region" ) |
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| 64 | << getOpenMPDirectiveName(Directive->getDirectiveKind()); |
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| 65 | } |
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| 66 | |
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| 67 | } // namespace clang::tidy::openmp |
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| 68 | |
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