d7255a716e
This will make fuzzing more hermetic and less machine-dependent. Docs-Preview: https://skia.org/?cl=217864 Change-Id: If29d7b86e5290e9f749cb2fdde6f2ff892ffc333 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217864 Commit-Queue: Kevin Lubick <kjlubick@google.com> Reviewed-by: Mike Klein <mtklein@google.com>
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Reproducing Skia Fuzzes
We assume that you can build Skia. Many fuzzes only reproduce when building with ASAN or MSAN; see those instructions for more details.
When building, you should add the following args to BUILD.gn to make reproducing less machine- and platform- dependent:
skia_use_fontconfig=false
skia_use_freetype=true
skia_use_system_freetype2=false
skia_use_wuffs=true
skia_enable_skottie=true
skia_enable_fontmgr_custom=false
skia_enable_fontmgr_custom_empty=true
All that is needed to reproduce a fuzz downloaded from ClusterFuzz, oss-fuzz or fuzzer.skia.org is to run something like:
out/ASAN/fuzz -b /path/to/downloaded/testcase
The fuzz binary will try its best to guess what the type/name should be based on the name of the testcase. Manually providing type and name is also supported, like:
out/ASAN/fuzz -t filter_fuzz -b /path/to/downloaded/testcase
out/ASAN/fuzz -t api -n RasterN32Canvas -b /path/to/downloaded/testcase
To enumerate all supported types and names, run the following:
out/ASAN/fuzz --help # will list all types
out/ASAN/fuzz -t api # will list all names