clang/lib/Basic/SanitizerSpecialCaseList.cpp

   1 //===--- SanitizerSpecialCaseList.cpp - SCL for sanitizers ----------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // An extension of SpecialCaseList to allowing querying sections by
  10 // SanitizerMask.
  11 //
  12 //===----------------------------------------------------------------------===//
  13 #include "clang/Basic/SanitizerSpecialCaseList.h"
  14
  15 using namespace clang;
  16
  17 std::unique_ptr<SanitizerSpecialCaseList>
  18 SanitizerSpecialCaseList::create(const std::vector<std::string> &Paths,
  19                                  llvm::vfs::FileSystem &VFS,
  20                                  std::string &Error) {
  21   std::unique_ptr<clang::SanitizerSpecialCaseList> SSCL(
  22       new SanitizerSpecialCaseList());
  23   if (SSCL->createInternal(Paths, VFS, Error)) {
  24     SSCL->createSanitizerSections();
  25     return SSCL;
  26   }
  27   return nullptr;
  28 }
  29
  30 std::unique_ptr<SanitizerSpecialCaseList>
  31 SanitizerSpecialCaseList::createOrDie(const std::vector<std::string> &Paths,
  32                                       llvm::vfs::FileSystem &VFS) {
  33   std::string Error;
  34   if (auto SSCL = create(Paths, VFS, Error))
  35     return SSCL;
  36   llvm::report_fatal_error(StringRef(Error));
  37 }
  38
  39 void SanitizerSpecialCaseList::createSanitizerSections() {
  40   for (auto &It : Sections) {
  41     auto &S = It.second;
  42     SanitizerMask Mask;
  43
  44 #define SANITIZER(NAME, ID)                                                    \
  45   if (S.SectionMatcher->match(NAME))                                           \
  46     Mask |= SanitizerKind::ID;
  47 #define SANITIZER_GROUP(NAME, ID, ALIAS) SANITIZER(NAME, ID)
  48
  49 #include "clang/Basic/Sanitizers.def"
  50 #undef SANITIZER
  51 #undef SANITIZER_GROUP
  52
  53     SanitizerSections.emplace_back(Mask, S.Entries);
  54   }
  55 }
  56
  57 bool SanitizerSpecialCaseList::inSection(SanitizerMask Mask, StringRef Prefix,
  58                                          StringRef Query,
  59                                          StringRef Category) const {
  60   for (auto &S : SanitizerSections)
  61     if ((S.Mask & Mask) &&
  62         SpecialCaseList::inSectionBlame(S.Entries, Prefix, Query, Category))
  63       return true;
  64
  65   return false;
  66 }