vendor/llvm/llvm-trunk-r308421

1 files changed, 0 insertions, 181 deletions

diff --git a/lib/Fuzzer/FuzzerTraceState.cpp b/lib/Fuzzer/FuzzerTraceState.cpp
deleted file mode 100644
index 8670e2ad67277..0000000000000
--- a/lib/Fuzzer/FuzzerTraceState.cpp
+++ /dev/null
@@ -1,181 +0,0 @@
-//===- FuzzerTraceState.cpp - Trace-based fuzzer mutator ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-// Data tracing.
-//===----------------------------------------------------------------------===//
-
-#include "FuzzerDictionary.h"
-#include "FuzzerIO.h"
-#include "FuzzerInternal.h"
-#include "FuzzerMutate.h"
-#include "FuzzerTracePC.h"
-#include <algorithm>
-#include <cstring>
-#include <map>
-#include <set>
-#include <thread>
-
-namespace fuzzer {
-
-// Declared as static globals for faster checks inside the hooks.
-static bool RecordingMemmem = false;
-
-int ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr;
-
-class TraceState {
-public:
-  TraceState(MutationDispatcher &MD, const FuzzingOptions &Options,
-             const Fuzzer *F)
-      : MD(MD), Options(Options), F(F) {}
-
-  void StartTraceRecording() {
-    if (!Options.UseMemmem)
-      return;
-    RecordingMemmem = true;
-    InterestingWords.clear();
-    MD.ClearAutoDictionary();
-  }
-
-  void StopTraceRecording() {
-    if (!RecordingMemmem)
-      return;
-    for (auto &W : InterestingWords)
-      MD.AddWordToAutoDictionary({W});
-  }
-
-  void AddInterestingWord(const uint8_t *Data, size_t Size) {
-    if (!RecordingMemmem || !F->InFuzzingThread()) return;
-    if (Size <= 1) return;
-    Size = std::min(Size, Word::GetMaxSize());
-    Word W(Data, Size);
-    InterestingWords.insert(W);
-  }
-
- private:
-
-  // TODO: std::set is too inefficient, need to have a custom DS here.
-  std::set<Word> InterestingWords;
-  MutationDispatcher &MD;
-  const FuzzingOptions Options;
-  const Fuzzer *F;
-};
-
-static TraceState *TS;
-
-void Fuzzer::StartTraceRecording() {
-  if (!TS) return;
-  TS->StartTraceRecording();
-}
-
-void Fuzzer::StopTraceRecording() {
-  if (!TS) return;
-  TS->StopTraceRecording();
-}
-
-void Fuzzer::InitializeTraceState() {
-  if (!Options.UseMemmem) return;
-  TS = new TraceState(MD, Options, this);
-}
-
-static size_t InternalStrnlen(const char *S, size_t MaxLen) {
-  size_t Len = 0;
-  for (; Len < MaxLen && S[Len]; Len++) {}
-  return Len;
-}
-
-// Finds min of (strlen(S1), strlen(S2)).
-// Needed bacause one of these strings may actually be non-zero terminated.
-static size_t InternalStrnlen2(const char *S1, const char *S2) {
-  size_t Len = 0;
-  for (; S1[Len] && S2[Len]; Len++)  {}
-  return Len;
-}
-
-}  // namespace fuzzer
-
-using fuzzer::TS;
-
-extern "C" {
-
-// We may need to avoid defining weak hooks to stay compatible with older clang.
-#ifndef LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
-# define LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS 1
-#endif
-
-#if LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_memcmp(void *caller_pc, const void *s1,
-                                  const void *s2, size_t n, int result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  if (result == 0) return;  // No reason to mutate.
-  if (n <= 1) return;  // Not interesting.
-  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n, /*StopAtZero*/false);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strncmp(void *caller_pc, const char *s1,
-                                   const char *s2, size_t n, int result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  if (result == 0) return;  // No reason to mutate.
-  size_t Len1 = fuzzer::InternalStrnlen(s1, n);
-  size_t Len2 = fuzzer::InternalStrnlen(s2, n);
-  n = std::min(n, Len1);
-  n = std::min(n, Len2);
-  if (n <= 1) return;  // Not interesting.
-  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n, /*StopAtZero*/true);
-}
-
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strcmp(void *caller_pc, const char *s1,
-                                   const char *s2, int result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  if (result == 0) return;  // No reason to mutate.
-  size_t N = fuzzer::InternalStrnlen2(s1, s2);
-  if (N <= 1) return;  // Not interesting.
-  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, N, /*StopAtZero*/true);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strncasecmp(void *called_pc, const char *s1,
-                                       const char *s2, size_t n, int result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  return __sanitizer_weak_hook_strncmp(called_pc, s1, s2, n, result);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strcasecmp(void *called_pc, const char *s1,
-                                      const char *s2, int result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  return __sanitizer_weak_hook_strcmp(called_pc, s1, s2, result);
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strstr(void *called_pc, const char *s1,
-                                  const char *s2, char *result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_strcasestr(void *called_pc, const char *s1,
-                                      const char *s2, char *result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
-}
-
-ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
-void __sanitizer_weak_hook_memmem(void *called_pc, const void *s1, size_t len1,
-                                  const void *s2, size_t len2, void *result) {
-  if (fuzzer::ScopedDoingMyOwnMemOrStr::DoingMyOwnMemOrStr) return;
-  TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), len2);
-}
-
-#endif  // LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
-}  // extern "C"