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