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[Fuzzing] Default BINARYEN_CORES=4 in fuzz_opt.py #9304

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Oct 27, 2026
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[Fuzzing] Default BINARYEN_CORES=4 in fuzz_opt.py #9304

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4 changes: 4 additions & 0 deletions scripts/fuzz_opt.py
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Expand Up @@ -49,6 +49,10 @@

assert sys.version_info >= (3, 10), 'requires Python 3.10'

# Limit default thread pool size per subprocess so parallel passes are still
# exercised without spawning a thread per hardware core on every invocation.
os.environ.setdefault('BINARYEN_CORES', '4')

# parameters

# feature options that are always passed to the tools.
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