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[fuzz] Add --enable-fuzzer for clang fuzzing

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This commit is contained in:
Nick Terrell 2019-02-27 17:15:27 -08:00
parent be3bd70c57
commit 4b0024a97d
1 changed files with 17 additions and 3 deletions
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20
tests/fuzz/fuzz.py
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@ -192,11 +192,21 @@ def build_parser(args):
default=LIB_FUZZING_ENGINE,
help=('The fuzzing engine to use e.g. /path/to/libFuzzer.a '
"(default: $LIB_FUZZING_ENGINE='{})".format(LIB_FUZZING_ENGINE)))
parser.add_argument(
fuzz_group = parser.add_mutually_exclusive_group()
fuzz_group.add_argument(
'--enable-coverage',
dest='coverage',
action='store_true',
help='Enable coverage instrumentation (-fsanitize-coverage)')
fuzz_group.add_argument(
'--enable-fuzzer',
dest='fuzzer',
action='store_true',
help=('Enable clang fuzzer (-fsanitize=fuzzer). When enabled '
'LIB_FUZZING_ENGINE is ignored')
)
parser.add_argument(
'--enable-asan', dest='asan', action='store_true', help='Enable UBSAN')
parser.add_argument(
@ -364,13 +374,17 @@ def build(args):
'-DFUZZ_RNG_SEED_SIZE={}'.format(args.fuzz_rng_seed_size),
]
mflags += ['LIB_FUZZING_ENGINE={}'.format(args.lib_fuzzing_engine)]
# Set flags for options
assert not (args.fuzzer and args.coverage)
if args.coverage:
common_flags += [
'-fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp'
]
if args.fuzzer:
common_flags += ['-fsanitize=fuzzer']
args.lib_fuzzing_engine = ''
mflags += ['LIB_FUZZING_ENGINE={}'.format(args.lib_fuzzing_engine)]
if args.sanitize_recover:
recover_flags = ['-fsanitize-recover=all']