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      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(Error);
     37 }
     38 
     39 void SanitizerSpecialCaseList::createSanitizerSections() {
     40   for (auto &S : Sections) {
     41     SanitizerMask Mask;
     42 
     43 #define SANITIZER(NAME, ID)                                                    \
     44   if (S.SectionMatcher->match(NAME))                                           \
     45     Mask |= SanitizerKind::ID;
     46 #define SANITIZER_GROUP(NAME, ID, ALIAS) SANITIZER(NAME, ID)
     47 
     48 #include "clang/Basic/Sanitizers.def"
     49 #undef SANITIZER
     50 #undef SANITIZER_GROUP
     51 
     52     SanitizerSections.emplace_back(Mask, S.Entries);
     53   }
     54 }
     55 
     56 bool SanitizerSpecialCaseList::inSection(SanitizerMask Mask, StringRef Prefix,
     57                                          StringRef Query,
     58                                          StringRef Category) const {
     59   for (auto &S : SanitizerSections)
     60     if ((S.Mask & Mask) &&
     61         SpecialCaseList::inSectionBlame(S.Entries, Prefix, Query, Category))
     62       return true;
     63 
     64   return false;
     65 }
     66