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HarfBuzz text shaping engine http://harfbuzz.github.io/
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harfbuzz/test/fuzzing
Garret Rieger 333946b00e
[subset] Fix fuzzer timeout. 		12 months ago
..
fonts [subset] Fix fuzzer timeout. 12 months ago
graphs [repacker] Fix fuzzer memory leak. 1 year ago
sets
…
Makefile.am test/fuzzing: Fix dist 2 years ago
README.md Update test/fuzzing/README 2 years ago
hb-draw-fuzzer.cc More s/hb_font_get_glyph_shape/hb_font_draw_glyph/ 2 years ago
hb-fuzzer.hh [fuzzer] In 50% of runs don't fail the allocator 2 years ago
hb-repacker-fuzzer.cc [repacker] use memcpy to avoid alignment issues. 2 years ago
hb-set-fuzzer.cc [fuzzer] In 50% of runs don't fail the allocator 2 years ago
hb-shape-fuzzer.cc [fuzzer] In 50% of runs don't fail the allocator 2 years ago
hb-subset-fuzzer.cc Check for failed subset input creation in the fuzzer. 2 years ago
main.cc
…
meson.build [repacker] only build repacker fuzzer when experimental api is enabled. 2 years ago
run-draw-fuzzer-tests.py
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run-repacker-fuzzer-tests.py [repacker] add test for repacker fuzzer. 2 years ago
run-shape-fuzzer-tests.py
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run-subset-fuzzer-tests.py
…

README.md

To build the fuzzers with libFuzzer to perform actual fuzzing, build with:

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: