Depending on what area you are working in change or add
HB_DEBUG_<whatever>. Values defined in
# quick sanity check time (make -j4 CPPFLAGS='-DHB_DEBUG_SUBSET=100' \ && (make -j4 -C test/api check || cat test/api/test-suite.log)) # slower sanity check time (make -j4 CPPFLAGS='-DHB_DEBUG_SUBSET=100' \ && make -j4 -C src check \ && make -j4 -C test/api check \ && make -j4 -C test/subset check) # confirm you didn't break anything else time (make -j4 CPPFLAGS='-DHB_DEBUG_SUBSET=100' \ && make -j4 check) # often catches files you didn't add, e.g. test fonts to EXTRA_DIST make distcheck
NOTE: this sometimes yields harder to read results than the full fuzzer
# For nice symbols tell asan how to symoblize. Note that it doesn't like versioned copies like llvm-symbolizer-3.8 # export ASAN_SYMBOLIZER_PATH=path to version-less llvm-symbolizer # ex export ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-3.8/bin/llvm-symbolizer ./configure CC=clang CXX=clang++ CPPFLAGS=-fsanitize=address LDFLAGS=-fsanitize=address # make/run tests as usual
cd ./util ../libtool --mode=execute gdb --args ./hb-subset ...
# make clean if you previously build w/o debug logging make CPPFLAGS=-DHB_DEBUG_SUBSET=100
Note: You'll need to first install ninja-build via apt-get.
cd harfbuzz mkdir buid cmake -DHB_CHECK=ON -Bbuild -H. -GNinja && ninja -Cbuild && CTEST_OUTPUT_ON_FAILURE=1 ninja -Cbuild test
# push your changs to a branch on googlefonts/harfbuzz # In a local copy of oss-fuzz, edit projects/harfbuzz/Dockerfile # Change the git clone to pull your branch # Do this periodically sudo python infra/helper.py build_image harfbuzz # Do these to update/run sudo python infra/helper.py build_fuzzers --sanitizer address harfbuzz sudo python infra/helper.py run_fuzzer harfbuzz hb-subset-fuzzer