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

[Dokyung Song via Phabricator via cfe-commits]

dokyungs created this revision.
Herald added subscribers: Sanitizers, cfe-commits, mgorny.
Herald added projects: clang, Sanitizers.

libFuzzer intercepts certain library functions such as memcmp/strcmp by defining weak hooks. Weak hooks, however, are called only when other runtimes such as ASan is linked. This patch defines libFuzzer's own interceptors, which is linked into the libFuzzer executable when other runtimes are not linked, i.e., when -fsanitize=fuzzer is given, but not others.


Repository:
  rG LLVM Github Monorepo

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

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