[PATCH] D83494: [libFuzzer] Link libFuzzer's own interceptors when other compiler runtimes are not linked.

[Dokyung Song via Phabricator via cfe-commits]

dokyungs updated this revision to Diff 277462.
dokyungs added a comment.

Add interceptors for all the functions libFuzzer has a weak interceptor for, and duplicate existing interceptor test cases with new compiler flags (-fno-sanitize=address).

Builtin libfunc optimizations may transform memcmp and strcmp-like functions. To disable such optimizations, -fno-builtin= flag was additionally added in compiling new test cases. FWIW, the original test cases didn't require such flags since other sanitizers including ASan disables those optimizations in their LLVM pass by dropping libfunc attribute in the call instructions.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D83494/new/

https://reviews.llvm.org/D83494

Files:
  clang/include/clang/Driver/SanitizerArgs.h
  clang/lib/Driver/SanitizerArgs.cpp
  clang/lib/Driver/ToolChains/CommonArgs.cpp
  compiler-rt/lib/fuzzer/CMakeLists.txt
  compiler-rt/lib/fuzzer/FuzzerInterceptors.cpp
  compiler-rt/test/fuzzer/no-asan-memcmp.test
  compiler-rt/test/fuzzer/no-asan-strcmp.test
  compiler-rt/test/fuzzer/no-asan-strncmp.test
  compiler-rt/test/fuzzer/no-asan-strstr.test

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