| 1 | //===--- SanitizerSpecialCaseList.cpp - SCL for sanitizers ----------------===// |
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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 | // An extension of SpecialCaseList to allowing querying sections by |
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| 10 | // SanitizerMask. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | #include "clang/Basic/SanitizerSpecialCaseList.h" |
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| 14 | #include "llvm/ADT/STLExtras.h" |
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| 15 | |
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| 16 | using namespace clang; |
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| 17 | |
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| 18 | std::unique_ptr<SanitizerSpecialCaseList> |
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| 19 | SanitizerSpecialCaseList::create(const std::vector<std::string> &Paths, |
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| 20 | llvm::vfs::FileSystem &VFS, |
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| 21 | std::string &Error) { |
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| 22 | std::unique_ptr<clang::SanitizerSpecialCaseList> SSCL( |
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| 23 | new SanitizerSpecialCaseList()); |
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| 24 | if (SSCL->createInternal(Paths, VFS, Error)) { |
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| 25 | SSCL->createSanitizerSections(); |
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| 26 | return SSCL; |
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| 27 | } |
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| 28 | return nullptr; |
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| 29 | } |
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| 30 | |
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| 31 | std::unique_ptr<SanitizerSpecialCaseList> |
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| 32 | SanitizerSpecialCaseList::createOrDie(const std::vector<std::string> &Paths, |
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| 33 | llvm::vfs::FileSystem &VFS) { |
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| 34 | std::string Error; |
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| 35 | if (auto SSCL = create(Paths, VFS, Error)) |
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| 36 | return SSCL; |
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| 37 | llvm::report_fatal_error(reason: StringRef(Error)); |
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| 38 | } |
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| 39 | |
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| 40 | void SanitizerSpecialCaseList::createSanitizerSections() { |
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| 41 | for (auto &S : Sections) { |
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| 42 | SanitizerMask Mask; |
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| 43 | |
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| 44 | #define SANITIZER(NAME, ID) \ |
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| 45 | if (S.SectionMatcher->match(NAME)) \ |
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| 46 | Mask |= SanitizerKind::ID; |
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| 47 | #define SANITIZER_GROUP(NAME, ID, ALIAS) SANITIZER(NAME, ID) |
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| 48 | |
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| 49 | #include "clang/Basic/Sanitizers.def" |
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| 50 | #undef SANITIZER |
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| 51 | #undef SANITIZER_GROUP |
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| 52 | |
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| 53 | SanitizerSections.emplace_back(args&: Mask, args&: S.Entries, args&: S.FileIdx); |
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| 54 | } |
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| 55 | } |
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| 56 | |
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| 57 | bool SanitizerSpecialCaseList::inSection(SanitizerMask Mask, StringRef Prefix, |
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| 58 | StringRef Query, |
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| 59 | StringRef Category) const { |
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| 60 | return inSectionBlame(Mask, Prefix, Query, Category) != NotFound; |
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| 61 | } |
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| 62 | |
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| 63 | std::pair<unsigned, unsigned> |
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| 64 | SanitizerSpecialCaseList::inSectionBlame(SanitizerMask Mask, StringRef Prefix, |
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| 65 | StringRef Query, |
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| 66 | StringRef Category) const { |
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| 67 | for (const auto &S : llvm::reverse(C: SanitizerSections)) { |
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| 68 | if (S.Mask & Mask) { |
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| 69 | unsigned LineNum = |
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| 70 | SpecialCaseList::inSectionBlame(Entries: S.Entries, Prefix, Query, Category); |
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| 71 | if (LineNum > 0) |
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| 72 | return {S.FileIdx, LineNum}; |
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| 73 | } |
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| 74 | } |
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| 75 | return NotFound; |
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| 76 | } |
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| 77 | |
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