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| author | Behdad Esfahbod <behdad@behdad.org> | 2022-08-03 11:31:04 -0600 |
|---|---|---|
| committer | Behdad Esfahbod <behdad@behdad.org> | 2022-08-03 11:31:34 -0600 |
| commit | e68e874da61ef72e63268d451ecde8785cd2f871 (patch) | |
| tree | 65ba2400a79a625a14fa4342012f5aa8b7f5809b | |
| parent | c80e32972f485dbdc326d7daa110f94f4d66cbf9 (diff) | |
| download | harfbuzz_ng-e68e874da61ef72e63268d451ecde8785cd2f871.tar.gz | |
Update test/fuzzing/README
| -rw-r--r-- | TESTING.md | 6 | ||||
| -rw-r--r-- | test/fuzzing/README | 21 | ||||
| -rw-r--r-- | test/fuzzing/README.md | 17 |
3 files changed, 18 insertions, 26 deletions
diff --git a/TESTING.md b/TESTING.md index 2fcc5c4f7..18d702027 100644 --- a/TESTING.md +++ b/TESTING.md @@ -39,11 +39,7 @@ ninja -C build ## Test with the Fuzzer -```shell -CXXFLAGS="-fsanitize=address,fuzzer-no-link" meson fuzzbuild --default-library=static -Dfuzzer_ldflags="-fsanitize=address,fuzzer" -Dexperimental_api=true -ninja -Cfuzzbuild test/fuzzing/hb-{shape,draw,subset,set}-fuzzer -fuzzbuild/test/fuzzing/hb-subset-fuzzer test/fuzzing/fonts -``` +FOr fuzzing, see `test/fuzzing/README.md`. ## Profiling diff --git a/test/fuzzing/README b/test/fuzzing/README deleted file mode 100644 index af99cf95a..000000000 --- a/test/fuzzing/README +++ /dev/null @@ -1,21 +0,0 @@ -In order to build the fuzzer one needs to build HarfBuzz and -harfbuzz/test/fuzzing/hb-fuzzer.cc with: - - Using the most recent Clang - - With -fsanitize=address (or =undefined, or a combination) - - With -fsanitize-coverage=edge[,8bit-counters,trace-cmp] - - With various defines that limit worst case exponential behavior. - See FUZZING_CPPFLAGS in harfbuzz/src/Makefile.am for the list. - - link against libFuzzer - -To run the fuzzer one needs to first obtain a test corpus as a directory -containing interesting fonts. A good starting point is inside -harfbuzz/test/shaping/fonts/fonts/. -Then, run the fuzzer like this: - ./hb-fuzzer -max_len=2048 CORPUS_DIR -Where max_len specifies the maximal length of font files to handle. -The smaller the faster. - -For more details consult the following locations: - - http://llvm.org/docs/LibFuzzer.html or - - https://github.com/google/libfuzzer-bot/tree/master/harfbuzz - - https://github.com/harfbuzz/harfbuzz/issues/139 diff --git a/test/fuzzing/README.md b/test/fuzzing/README.md new file mode 100644 index 000000000..8529a0c65 --- /dev/null +++ b/test/fuzzing/README.md @@ -0,0 +1,17 @@ +To build the fuzzers with libFuzzer to perform actual fuzzing, build with: + +```shell +CXX=clang++ CXXFLAGS="-fsanitize=address,fuzzer-no-link" meson fuzzbuild --default-library=static -Dfuzzer_ldflags="-fsanitize=address,fuzzer" + +ninja -Cfuzzbuild +``` + +Then, run the fuzzer like this: + +fuzzbuild/test/fuzzing/hb-{shape,draw,subset,set}-fuzzer [-max_len=2048] [CORPUS_DIR] + +Where max_len specifies the maximal length of font files to handle. +The smaller the faster. + +For more details consult the following locations: + - http://llvm.org/docs/LibFuzzer.html |