def test_async_gen_flags(self):
# Test inference in the presence of pre-existing flags
for is_async in (None, True):
# Infer generator
code = ConcreteBytecode()
code.append(ConcreteInstr("YIELD_VALUE"))
for f, expected in (
(CompilerFlags.COROUTINE, CompilerFlags.ASYNC_GENERATOR),
(CompilerFlags.ASYNC_GENERATOR, CompilerFlags.ASYNC_GENERATOR),
(CompilerFlags.ITERABLE_COROUTINE, CompilerFlags.ITERABLE_COROUTINE),
):
code.flags = CompilerFlags(f)
code.update_flags(is_async=is_async)
self.assertTrue(bool(code.flags & expected))
# Infer coroutine
code = ConcreteBytecode()
code.append(ConcreteInstr("YIELD_FROM"))
for f, expected in (
(CompilerFlags.COROUTINE, CompilerFlags.COROUTINE),
(CompilerFlags.ASYNC_GENERATOR, CompilerFlags.COROUTINE),
(CompilerFlags.ITERABLE_COROUTINE, CompilerFlags.ITERABLE_COROUTINE),
):
code.flags = CompilerFlags(f)
code.update_flags(is_async=is_async)
self.assertTrue(bool(code.flags & expected))
# Crash on ITERABLE_COROUTINE with async bytecode
code = ConcreteBytecode()
code.append(ConcreteInstr("GET_AWAITABLE"))
code.flags = CompilerFlags(CompilerFlags.ITERABLE_COROUTINE)
with self.assertRaises(ValueError):
code.update_flags(is_async=is_async)
def test_invalid_types(self):
code = ConcreteBytecode()
code.append(Label())
with self.assertRaises(ValueError):
list(code)
with self.assertRaises(ValueError):
ConcreteBytecode([Label()])
def test_eq(self):
code = ConcreteBytecode()
self.assertFalse(code == 1)
for name, val in (
("names", ["a"]),
("varnames", ["a"]),
("consts", [1]),
("argcount", 1),
("kwonlyargcount", 2),
("flags", CompilerFlags(CompilerFlags.GENERATOR)),
("first_lineno", 10),
("filename", "xxxx.py"),
("name", "__x"),
("docstring", "x-x-x"),
("cellvars", [CellVar("x")]),
("freevars", [FreeVar("x")]),
):
c = ConcreteBytecode()
setattr(c, name, val)
# For obscure reasons using assertNotEqual here fail
self.assertFalse(code == c)
if sys.version_info > (3, 8):
c = ConcreteBytecode()
c.posonlyargcount = 10
self.assertFalse(code == c)
c = ConcreteBytecode()
c.consts = [1]
code.consts = [1]
c.append(ConcreteInstr("LOAD_CONST", 0))
self.assertFalse(code == c)
def test_async_gen_no_flag_is_async_None(self):
# Test inference in the absence of any flag set on the bytecode
# Infer generator
code = ConcreteBytecode()
code.append(ConcreteInstr("YIELD_VALUE"))
code.update_flags()
self.assertTrue(bool(code.flags & CompilerFlags.GENERATOR))
# Infer coroutine
code = ConcreteBytecode()
code.append(ConcreteInstr("GET_AWAITABLE"))
code.update_flags()
self.assertTrue(bool(code.flags & CompilerFlags.COROUTINE))
# Infer coroutine or async generator
for i, expected in (
("YIELD_VALUE", CompilerFlags.ASYNC_GENERATOR),
("YIELD_FROM", CompilerFlags.COROUTINE),
):
code = ConcreteBytecode()
code.append(ConcreteInstr("GET_AWAITABLE"))
code.append(ConcreteInstr(i))
code.update_flags()
self.assertTrue(bool(code.flags & expected))
def test_flag_inference(self):
# Check no loss of non-infered flags
code = ControlFlowGraph()
code.flags |= (CompilerFlags.NEWLOCALS | CompilerFlags.VARARGS
| CompilerFlags.VARKEYWORDS | CompilerFlags.NESTED
| CompilerFlags.FUTURE_GENERATOR_STOP)
code.update_flags()
for f in (CompilerFlags.NEWLOCALS, CompilerFlags.VARARGS,
CompilerFlags.VARKEYWORDS, CompilerFlags.NESTED,
CompilerFlags.NOFREE, CompilerFlags.OPTIMIZED,
CompilerFlags.FUTURE_GENERATOR_STOP):
self.assertTrue(bool(code.flags & f))
# Infer optimized and nofree
code = Bytecode()
flags = infer_flags(code)
self.assertTrue(bool(flags & CompilerFlags.OPTIMIZED))
self.assertTrue(bool(flags & CompilerFlags.NOFREE))
code.append(ConcreteInstr('STORE_NAME', 1))
flags = infer_flags(code)
self.assertFalse(bool(flags & CompilerFlags.OPTIMIZED))
self.assertTrue(bool(flags & CompilerFlags.NOFREE))
code.append(ConcreteInstr('STORE_DEREF', 2))
code.update_flags()
self.assertFalse(bool(code.flags & CompilerFlags.OPTIMIZED))
self.assertFalse(bool(code.flags & CompilerFlags.NOFREE))
# Infer generator
code = ConcreteBytecode()
code.append(ConcreteInstr('YIELD_VALUE'))
for is_async, expected in ((False, CompilerFlags.GENERATOR),
(True, CompilerFlags.ASYNC_GENERATOR)):
self.assertTrue(bool(infer_flags(code, is_async) & expected))
# Infer coroutine
code = ConcreteBytecode()
code.append(ConcreteInstr('GET_AWAITABLE'))
iter_flags = CompilerFlags(CompilerFlags.ITERABLE_COROUTINE)
for f, expected in ((CompilerFlags(0), True), (iter_flags, False)):
code.flags = f
self.assertEqual(bool(infer_flags(code) & CompilerFlags.COROUTINE),
expected)
# Test check flag sanity
code.append(ConcreteInstr('YIELD_VALUE'))
code.flags = CompilerFlags(CompilerFlags.GENERATOR
| CompilerFlags.COROUTINE)
infer_flags(code, is_async=True) # Just want to be sure it pases
with self.assertRaises(ValueError):
code.update_flags()
with self.assertRaises(ValueError):
infer_flags(None)
def test_load_classderef(self):
concrete = ConcreteBytecode()
concrete.cellvars = ['__class__']
concrete.freevars = ['__class__']
concrete.extend([
ConcreteInstr('LOAD_CLASSDEREF', 1),
ConcreteInstr('STORE_DEREF', 1)
])
bytecode = concrete.to_bytecode()
self.assertEqual(bytecode.freevars, ['__class__'])
self.assertEqual(bytecode.cellvars, ['__class__'])
self.assertEqual(list(bytecode), [
Instr('LOAD_CLASSDEREF', FreeVar('__class__'), lineno=1),
Instr('STORE_DEREF', FreeVar('__class__'), lineno=1)
])
concrete = bytecode.to_concrete_bytecode()
self.assertEqual(concrete.freevars, ['__class__'])
self.assertEqual(concrete.cellvars, ['__class__'])
self.assertEqual(list(concrete), [
ConcreteInstr('LOAD_CLASSDEREF', 1, lineno=1),
ConcreteInstr('STORE_DEREF', 1, lineno=1)
])
code = concrete.to_code()
self.assertEqual(code.co_freevars, ('__class__', ))
self.assertEqual(code.co_cellvars, ('__class__', ))
self.assertEqual(
code.co_code,
b'\x94\x01\x89\x01' if WORDCODE else b'\x94\x01\x00\x89\x01\x00')
def test_legalize(self):
concrete = ConcreteBytecode()
concrete.first_lineno = 3
concrete.consts = [7, 8, 9]
concrete.names = ["x", "y", "z"]
concrete.extend(
[
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
ConcreteInstr("LOAD_CONST", 1, lineno=4),
ConcreteInstr("STORE_NAME", 1),
SetLineno(5),
ConcreteInstr("LOAD_CONST", 2, lineno=6),
ConcreteInstr("STORE_NAME", 2),
]
)
concrete.legalize()
self.assertListEqual(
list(concrete),
[
ConcreteInstr("LOAD_CONST", 0, lineno=3),
ConcreteInstr("STORE_NAME", 0, lineno=3),
ConcreteInstr("LOAD_CONST", 1, lineno=4),
ConcreteInstr("STORE_NAME", 1, lineno=4),
ConcreteInstr("LOAD_CONST", 2, lineno=5),
ConcreteInstr("STORE_NAME", 2, lineno=5),
],
)
def test_to_bytecode_consts(self):
# x = -0.0
# x = +0.0
#
# code optimized by the CPython 3.6 peephole optimizer which emits
# duplicated constants (0.0 is twice in consts).
code = ConcreteBytecode()
code.consts = [0.0, None, -0.0, 0.0]
code.names = ["x", "y"]
code.extend([
ConcreteInstr("LOAD_CONST", 2, lineno=1),
ConcreteInstr("STORE_NAME", 0, lineno=1),
ConcreteInstr("LOAD_CONST", 3, lineno=2),
ConcreteInstr("STORE_NAME", 1, lineno=2),
ConcreteInstr("LOAD_CONST", 1, lineno=2),
ConcreteInstr("RETURN_VALUE", lineno=2),
])
code = code.to_bytecode().to_concrete_bytecode()
# the conversion changes the constant order: the order comes from
# the order of LOAD_CONST instructions
self.assertEqual(code.consts, [-0.0, 0.0, None])
code.names = ["x", "y"]
self.assertListEqual(
list(code),
[
ConcreteInstr("LOAD_CONST", 0, lineno=1),
ConcreteInstr("STORE_NAME", 0, lineno=1),
ConcreteInstr("LOAD_CONST", 1, lineno=2),
ConcreteInstr("STORE_NAME", 1, lineno=2),
ConcreteInstr("LOAD_CONST", 2, lineno=2),
ConcreteInstr("RETURN_VALUE", lineno=2),
],
)
def test_extended_lnotab(self):
# x = 7
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
SetLineno(1 + 128),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(1 + 129),
ConcreteInstr("LOAD_CONST", 1),
SetLineno(1),
ConcreteInstr("STORE_NAME", 1),
])
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 1
if sys.version_info >= (3, 6):
code = concrete.to_code()
expected = b"d\x00Z\x00d\x01Z\x01"
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 1)
self.assertEqual(code.co_lnotab,
b"\x00\x7f\x02\x01\x02\x01\x00\x80\x02\xff")
else:
with self.assertRaises(ValueError) as cm:
code = concrete.to_code()
self.assertEqual(
str(cm.exception),
"negative line number delta is not supported "
"on Python < 3.6",
)
def test_extended_lnotab2(self):
# x = 7
# 200 blank lines
# y = 8
base_code = compile("x = 7" + "\n" * 200 + "y = 8", "", "exec")
concrete = ConcreteBytecode(
[
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
SetLineno(201),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("RETURN_VALUE"),
]
)
concrete.consts = [None, 7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 1
code = concrete.to_code()
self.assertEqual(code.co_code, base_code.co_code)
self.assertEqual(code.co_firstlineno, base_code.co_firstlineno)
self.assertEqual(code.co_lnotab, base_code.co_lnotab)
if sys.version_info >= (3, 10):
self.assertEqual(code.co_linetable, base_code.co_linetable)
def test_setlineno(self):
# x = 7
# y = 8
# z = 9
concrete = ConcreteBytecode()
concrete.consts = [7, 8, 9]
concrete.names = ["x", "y", "z"]
concrete.first_lineno = 3
concrete.extend(
[
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
SetLineno(4),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
SetLineno(5),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("STORE_NAME", 2),
]
)
code = concrete.to_bytecode()
self.assertEqual(
code,
[
Instr("LOAD_CONST", 7, lineno=3),
Instr("STORE_NAME", "x", lineno=3),
Instr("LOAD_CONST", 8, lineno=4),
Instr("STORE_NAME", "y", lineno=4),
Instr("LOAD_CONST", 9, lineno=5),
Instr("STORE_NAME", "z", lineno=5),
],
)
def test_async_gen_no_flag_is_async_False(self):
# Test inference when we request a non-async function
# Infer generator
code = ConcreteBytecode()
code.append(ConcreteInstr("YIELD_VALUE"))
code.flags = CompilerFlags(CompilerFlags.COROUTINE)
code.update_flags(is_async=False)
self.assertTrue(bool(code.flags & CompilerFlags.GENERATOR))
# Abort on coroutine
code = ConcreteBytecode()
code.append(ConcreteInstr("GET_AWAITABLE"))
code.flags = CompilerFlags(CompilerFlags.COROUTINE)
with self.assertRaises(ValueError):
code.update_flags(is_async=False)
def test_to_code_lnotab(self):
# x = 7
# y = 8
# z = 9
concrete = ConcreteBytecode()
concrete.consts = [7, 8, 9]
concrete.names = ['x', 'y', 'z']
concrete.first_lineno = 3
concrete.extend([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
SetLineno(4),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
SetLineno(5),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("STORE_NAME", 2)
])
code = concrete.to_code()
if WORDCODE:
expected = b'd\x00Z\x00d\x01Z\x01d\x02Z\x02'
else:
expected = (b'd\x00\x00'
b'Z\x00\x00'
b'd\x01\x00'
b'Z\x01\x00'
b'd\x02\x00'
b'Z\x02\x00')
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 3)
self.assertEqual(
code.co_lnotab,
b'\x04\x01\x04\x01' if WORDCODE else b'\x06\x01\x06\x01')
def test_to_code_lnotab(self):
# x = 7
# y = 8
# z = 9
concrete = ConcreteBytecode()
concrete.consts = [7, 8, 9]
concrete.names = ["x", "y", "z"]
concrete.first_lineno = 3
concrete.extend([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
SetLineno(4),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
SetLineno(5),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("STORE_NAME", 2),
])
code = concrete.to_code()
expected = (b"d\x00\x00"
b"Z\x00\x00"
b"d\x01\x00"
b"Z\x01\x00"
b"d\x02\x00"
b"Z\x02\x00")
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 3)
self.assertEqual(code.co_lnotab, b"\x06\x01\x06\x01")
def test_cellvar_freevar(self):
concrete = ConcreteBytecode()
concrete.cellvars = ["cell"]
concrete.freevars = ["free"]
concrete.append(ConcreteInstr("LOAD_DEREF", 0))
concrete.append(ConcreteInstr("LOAD_DEREF", 1))
code = concrete.to_code()
concrete = ConcreteBytecode.from_code(code)
self.assertEqual(concrete.cellvars, ["cell"])
self.assertEqual(concrete.freevars, ["free"])
self.assertEqual(
list(concrete),
[
ConcreteInstr("LOAD_DEREF", 0, lineno=1),
ConcreteInstr("LOAD_DEREF", 1, lineno=1),
],
)
bytecode = concrete.to_bytecode()
self.assertEqual(bytecode.cellvars, ["cell"])
self.assertEqual(
list(bytecode),
[
Instr("LOAD_DEREF", CellVar("cell"), lineno=1),
Instr("LOAD_DEREF", FreeVar("free"), lineno=1),
],
)
def test_to_code_lnotab(self):
# We use an actual function for the simple case to
# ensure we get lnotab right
def f():
#
#
x = 7 # noqa
y = 8 # noqa
z = 9 # noqa
fl = f.__code__.co_firstlineno
concrete = ConcreteBytecode()
concrete.consts = [None, 7, 8, 9]
concrete.varnames = ["x", "y", "z"]
concrete.first_lineno = fl
concrete.extend([
SetLineno(fl + 3),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_FAST", 0),
SetLineno(fl + 4),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("STORE_FAST", 1),
SetLineno(fl + 5),
ConcreteInstr("LOAD_CONST", 3),
ConcreteInstr("STORE_FAST", 2),
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("RETURN_VALUE"),
])
code = concrete.to_code()
self.assertEqual(code.co_code, f.__code__.co_code)
self.assertEqual(code.co_lnotab, f.__code__.co_lnotab)
if sys.version_info >= (3, 10):
self.assertEqual(code.co_linetable, f.__code__.co_linetable)
def test_negative_lnotab(self):
# x = 7
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(2),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1)
])
concrete.consts = [7, 8]
concrete.names = ['x', 'y']
concrete.first_lineno = 5
if sys.version_info >= (3, 6):
code = concrete.to_code()
expected = b'd\x00Z\x00d\x01Z\x01'
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 5)
self.assertEqual(code.co_lnotab, b'\x04\xfd')
else:
with self.assertRaises(ValueError) as cm:
code = concrete.to_code()
self.assertEqual(
str(cm.exception),
"negative line number delta is not supported "
"on Python < 3.6")
def test_extended_lnotab(self):
# x = 7
# 200 blank lines
# y = 8
concrete = ConcreteBytecode(
[
ConcreteInstr("LOAD_CONST", 0),
SetLineno(1 + 128),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(1 + 129),
ConcreteInstr("LOAD_CONST", 1),
SetLineno(1),
ConcreteInstr("STORE_NAME", 1),
]
)
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 1
code = concrete.to_code()
expected = b"d\x00Z\x00d\x01Z\x01"
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 1)
self.assertEqual(code.co_lnotab, b"\x02\x7f\x00\x01\x02\x01\x02\x80\x00\xff")
def test_async_gen_no_flag_is_async_True(self):
# Test inference when we request an async function
# Force coroutine
code = ConcreteBytecode()
code.update_flags(is_async=True)
self.assertTrue(bool(code.flags & CompilerFlags.COROUTINE))
# Infer coroutine or async generator
for i, expected in (
("YIELD_VALUE", CompilerFlags.ASYNC_GENERATOR),
("YIELD_FROM", CompilerFlags.COROUTINE),
):
code = ConcreteBytecode()
code.append(ConcreteInstr(i))
code.update_flags(is_async=True)
self.assertTrue(bool(code.flags & expected))
def test_freevar(self):
concrete = ConcreteBytecode()
concrete.freevars = ["x"]
concrete.append(ConcreteInstr("LOAD_DEREF", 0))
code = concrete.to_code()
concrete = ConcreteBytecode.from_code(code)
self.assertEqual(concrete.cellvars, [])
self.assertEqual(concrete.freevars, ["x"])
self.assertEqual(list(concrete), [ConcreteInstr("LOAD_DEREF", 0, lineno=1)])
bytecode = concrete.to_bytecode()
self.assertEqual(bytecode.cellvars, [])
self.assertEqual(list(bytecode), [Instr("LOAD_DEREF", FreeVar("x"), lineno=1)])
def test_cellvar(self):
concrete = ConcreteBytecode()
concrete.cellvars = ['x']
concrete.append(ConcreteInstr('LOAD_DEREF', 0))
code = concrete.to_code()
concrete = ConcreteBytecode.from_code(code)
self.assertEqual(concrete.cellvars, ['x'])
self.assertEqual(concrete.freevars, [])
self.assertEqual(list(concrete),
[ConcreteInstr('LOAD_DEREF', 0, lineno=1)])
bytecode = concrete.to_bytecode()
self.assertEqual(bytecode.cellvars, ['x'])
self.assertEqual(list(bytecode),
[Instr('LOAD_DEREF', CellVar('x'), lineno=1)])
def test_copy(self):
concrete = ConcreteBytecode()
concrete.first_lineno = 3
concrete.consts = [7, 8, 9]
concrete.names = ["x", "y", "z"]
concrete.extend([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
SetLineno(4),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
SetLineno(5),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("STORE_NAME", 2),
])
self.assertEqual(concrete, concrete.copy())
def test_negative_lnotab(self):
# x = 7
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(2),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
])
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 5
code = concrete.to_code()
expected = b"d\x00Z\x00d\x01Z\x01"
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 5)
self.assertEqual(code.co_lnotab, b"\x04\xfd")
def test_negative_lnotab(self):
# x = 7
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(2),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
])
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 5
with self.assertRaises(ValueError) as cm:
concrete.to_code()
self.assertEqual(
str(cm.exception),
"negative line number delta is not supported "
"on Python < 3.6",
)
def test_load_classderef(self):
concrete = ConcreteBytecode()
concrete.cellvars = ["__class__"]
concrete.freevars = ["__class__"]
concrete.extend([
ConcreteInstr("LOAD_CLASSDEREF", 1),
ConcreteInstr("STORE_DEREF", 1)
])
bytecode = concrete.to_bytecode()
self.assertEqual(bytecode.freevars, ["__class__"])
self.assertEqual(bytecode.cellvars, ["__class__"])
self.assertEqual(
list(bytecode),
[
Instr("LOAD_CLASSDEREF", FreeVar("__class__"), lineno=1),
Instr("STORE_DEREF", FreeVar("__class__"), lineno=1),
],
)
concrete = bytecode.to_concrete_bytecode()
self.assertEqual(concrete.freevars, ["__class__"])
self.assertEqual(concrete.cellvars, ["__class__"])
self.assertEqual(
list(concrete),
[
ConcreteInstr("LOAD_CLASSDEREF", 1, lineno=1),
ConcreteInstr("STORE_DEREF", 1, lineno=1),
],
)
code = concrete.to_code()
self.assertEqual(code.co_freevars, ("__class__", ))
self.assertEqual(code.co_cellvars, ("__class__", ))
self.assertEqual(
code.co_code,
b"\x94\x01\x89\x01" if WORDCODE else b"\x94\x01\x00\x89\x01\x00",
)
def test_repr(self):
r = repr(ConcreteBytecode())
self.assertIn("ConcreteBytecode", r)
self.assertIn("0", r)
