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#include "llvm/ADT/STLExtras.h"
15
16using namespace clang;
17
18std::unique_ptr<SanitizerSpecialCaseList>
19SanitizerSpecialCaseList::create(const std::vector<std::string> &Paths,
20 llvm::vfs::FileSystem &VFS,
21 std::string &Error) {
22 std::unique_ptr<clang::SanitizerSpecialCaseList> SSCL(
23 new SanitizerSpecialCaseList());
24 if (SSCL->createInternal(Paths, VFS, Error)) {
25 SSCL->createSanitizerSections();
26 return SSCL;
27 }
28 return nullptr;
29}
30
31std::unique_ptr<SanitizerSpecialCaseList>
32SanitizerSpecialCaseList::createOrDie(const std::vector<std::string> &Paths,
33 llvm::vfs::FileSystem &VFS) {
34 std::string Error;
35 if (auto SSCL = create(Paths, VFS, Error))
36 return SSCL;
37 llvm::report_fatal_error(reason: StringRef(Error));
38}
39
40void SanitizerSpecialCaseList::createSanitizerSections() {
41 for (auto &S : Sections) {
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(args&: Mask, args&: S.Entries, args&: S.FileIdx);
54 }
55}
56
57bool SanitizerSpecialCaseList::inSection(SanitizerMask Mask, StringRef Prefix,
58 StringRef Query,
59 StringRef Category) const {
60 return inSectionBlame(Mask, Prefix, Query, Category) != NotFound;
61}
62
63std::pair<unsigned, unsigned>
64SanitizerSpecialCaseList::inSectionBlame(SanitizerMask Mask, StringRef Prefix,
65 StringRef Query,
66 StringRef Category) const {
67 for (const auto &S : llvm::reverse(C: SanitizerSections)) {
68 if (S.Mask & Mask) {
69 unsigned LineNum =
70 SpecialCaseList::inSectionBlame(Entries: S.Entries, Prefix, Query, Category);
71 if (LineNum > 0)
72 return {S.FileIdx, LineNum};
73 }
74 }
75 return NotFound;
76}
77