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llvm / libfuzzer / 6839dbad07f39e67635cfec1ddd3727f2ab3bba7
commit6839dbad07f39e67635cfec1ddd3727f2ab3bba7[log] [tgz]
authorFangrui Song <maskray@google.com>Fri Jul 24 00:23:46 2020 -0700
committerCopybara-Service <copybara-worker@google.com>Thu Mar 25 23:21:11 2021 -0700
treea083eae2c8ca447c67e7b5b4a985035118c2f59d
parent218916269f5b8948da3183fe1f13a2177a876961 [diff]
[libFuzzer] Instrument bcmp

If we define memcmp in an archive, bcmp should be defined as well (many libc
define bcmp/memcmp in one object file).  Otherwise if the application calls bcmp
or strcmp which gets optimized to bcmp (SimplifyLibCalls), the undefined
reference may pull in an optimized bcmp/strcmp implementation (libc replacement)
later on the linker command line.  If both libFuzzer's memcmp and the optimized
memcmp are strong => there will be a multiple definition error.

GitOrigin-RevId: f7ffb122d08e7a8203557898c67eaac3a857b152
1 file changed
tree: a083eae2c8ca447c67e7b5b4a985035118c2f59d
  1. afl/
  2. dataflow/
  3. scripts/
  4. standalone/
  5. tests/
  6. build.sh
  7. FuzzedDataProvider.h
  8. FuzzerBuiltins.h
  9. FuzzerBuiltinsMsvc.h
  10. FuzzerCommand.h
  11. FuzzerCorpus.h
  12. FuzzerCrossOver.cpp
  13. FuzzerDataFlowTrace.cpp
  14. FuzzerDataFlowTrace.h
  15. FuzzerDefs.h
  16. FuzzerDictionary.h
  17. FuzzerDriver.cpp
  18. FuzzerExtFunctions.def
  19. FuzzerExtFunctions.h
  20. FuzzerExtFunctionsDlsym.cpp
  21. FuzzerExtFunctionsWeak.cpp
  22. FuzzerExtFunctionsWindows.cpp
  23. FuzzerExtraCounters.cpp
  24. FuzzerFlags.def
  25. FuzzerFork.cpp
  26. FuzzerFork.h
  27. FuzzerInterceptors.cpp
  28. FuzzerInterface.h
  29. FuzzerInternal.h
  30. FuzzerIO.cpp
  31. FuzzerIO.h
  32. FuzzerIOPosix.cpp
  33. FuzzerIOWindows.cpp
  34. FuzzerLoop.cpp
  35. FuzzerMain.cpp
  36. FuzzerMerge.cpp
  37. FuzzerMerge.h
  38. FuzzerMutate.cpp
  39. FuzzerMutate.h
  40. FuzzerOptions.h
  41. FuzzerPlatform.h
  42. FuzzerRandom.h
  43. FuzzerSHA1.cpp
  44. FuzzerSHA1.h
  45. FuzzerTracePC.cpp
  46. FuzzerTracePC.h
  47. FuzzerUtil.cpp
  48. FuzzerUtil.h
  49. FuzzerUtilDarwin.cpp
  50. FuzzerUtilFuchsia.cpp
  51. FuzzerUtilLinux.cpp
  52. FuzzerUtilPosix.cpp
  53. FuzzerUtilWindows.cpp
  54. FuzzerValueBitMap.h
  55. LICENSE.TXT
  56. README.txt