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[fuzz] Fix compiler detection & update ubsan flags #2503

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Merged
merged 1 commit into from
Feb 20, 2021
Merged

[fuzz] Fix compiler detection & update ubsan flags #2503

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9 changes: 5 additions & 4 deletions tests/fuzz/fuzz.py
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Original file line number Diff line number Diff line change
Expand Up @@ -180,24 +180,25 @@ def compiler_version(cc, cxx):
cxx_version_bytes = subprocess.check_output([cxx, "--version"])
compiler = None
version = None
print("{} --version:\n{}".format(cc, cc_version_bytes.decode('ascii')))
if b'clang' in cc_version_bytes:
assert(b'clang' in cxx_version_bytes)
compiler = 'clang'
elif b'gcc' in cc_version_bytes:
elif b'gcc' in cc_version_bytes or b'GCC' in cc_version_bytes:
assert(b'gcc' in cxx_version_bytes or b'g++' in cxx_version_bytes)
compiler = 'gcc'
if compiler is not None:
version_regex = b'([0-9])+\.([0-9])+\.([0-9])+'
version_regex = b'([0-9]+)\.([0-9]+)\.([0-9]+)'
version_match = re.search(version_regex, cc_version_bytes)
version = tuple(int(version_match.group(i)) for i in range(1, 4))
return compiler, version


def overflow_ubsan_flags(cc, cxx):
compiler, version = compiler_version(cc, cxx)
if compiler == 'gcc':
if compiler == 'gcc' and version < (8, 0, 0):
return ['-fno-sanitize=signed-integer-overflow']
if compiler == 'clang' and version >= (5, 0, 0):
if compiler == 'gcc' or (compiler == 'clang' and version >= (5, 0, 0)):
return ['-fno-sanitize=pointer-overflow']
return []

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