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6b5e6119ee
fmt/test/fuzzing
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Paul Dreik 6b5e6119ee set clang in one place
2021-08-22 17:52:45 -07:00
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.gitignore
build.sh set clang in one place 2021-08-22 17:52:45 -07:00
chrono-duration.cc clang format 2021-08-22 17:52:45 -07:00
CMakeLists.txt
float.cc clang format 2021-08-22 17:52:45 -07:00
fuzzer-common.h fix UB in fuzzer common (memcpy on nullptr) 2021-08-22 17:52:45 -07:00
main.cc
named-arg.cc clang format 2021-08-22 17:52:45 -07:00
one-arg.cc clang format 2021-08-22 17:52:45 -07:00
README.md
two-args.cc clang format 2021-08-22 17:52:45 -07:00

README.md

Running the fuzzers locally

There is a helper script to build the fuzzers, which has only been tested on Debian and Ubuntu linux so far. There should be no problems fuzzing on Windows (using clang>=8) or on Mac, but the script will probably not work out of the box.

Something along

mkdir build
cd build
export CXX=clang++
export CXXFLAGS="-fsanitize=fuzzer-no-link -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION= -g"
cmake .. -DFMT_SAFE_DURATION_CAST=On -DFMT_FUZZ=On -DFMT_FUZZ_LINKMAIN=Off -DFMT_FUZZ_LDFLAGS="-fsanitize=fuzzer"
cmake --build .

should work to build the fuzzers for all platforms which clang supports.

Execute a fuzzer with for instance

cd build
export UBSAN_OPTIONS=halt_on_error=1
mkdir out_chrono
bin/fuzzer_chrono_duration out_chrono