79 líneas
2.2 KiB
Python
79 líneas
2.2 KiB
Python
|
|
"""
|
|
Checks that the implementation does not make use of the `char` type.
|
|
This is ambiguous; compilers can freely choose `signed` or `unsigned` char.
|
|
"""
|
|
|
|
import os
|
|
|
|
import pytest
|
|
|
|
import helpers
|
|
import pqclean
|
|
import pycparser
|
|
|
|
|
|
def setup_module():
|
|
if not(os.path.exists(os.path.join('pycparser', '.git'))):
|
|
print("Please run `git submodule update --init`")
|
|
|
|
|
|
def walk_tree(ast, parent=[]):
|
|
if type(ast) is pycparser.c_ast.IdentifierType:
|
|
if ast.names == ['char']:
|
|
# allow casts in certain function calls
|
|
try:
|
|
if parent[-5].name.name in ['_mm256_set1_epi8']:
|
|
return
|
|
except:
|
|
pass
|
|
yield ast
|
|
|
|
for (_, child) in ast.children():
|
|
# recursively yield prohibited nodes
|
|
yield from walk_tree(child, parent=parent + [ast])
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
'implementation',
|
|
pqclean.Scheme.all_implementations(),
|
|
ids=str,
|
|
)
|
|
@helpers.skip_windows()
|
|
@helpers.filtered_test
|
|
def test_char(implementation):
|
|
errors = []
|
|
for fname in os.listdir(implementation.path()):
|
|
if not fname.endswith(".c"):
|
|
continue
|
|
tdir, _ = os.path.split(os.path.realpath(__file__))
|
|
ast = pycparser.parse_file(
|
|
os.path.join(implementation.path(), fname),
|
|
use_cpp=True,
|
|
cpp_path='cc', # not all platforms link cpp correctly; cc -E works
|
|
cpp_args=[
|
|
'-E',
|
|
'-std=c99',
|
|
'-nostdinc', # pycparser cannot deal with e.g. __attribute__
|
|
'-I{}'.format(os.path.join(tdir, "../common")),
|
|
# necessary to mock e.g. <stdint.h>
|
|
'-I{}'.format(
|
|
os.path.join(tdir, 'pycparser/utils/fake_libc_include')),
|
|
]
|
|
)
|
|
for node in walk_tree(ast):
|
|
# flatten nodes to a string to easily enforce uniqueness
|
|
err = "\n at {c.file}:{c.line}:{c.column}".format(c=node.coord)
|
|
if err not in errors:
|
|
errors.append(err)
|
|
if errors:
|
|
raise AssertionError(
|
|
"Prohibited use of char without explicit signed/unsigned" +
|
|
"".join(errors)
|
|
)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import sys
|
|
pytest.main(sys.argv)
|