8000 gh-128152: Argument Clinic: don't parse CPP directives inside C comments by erlend-aasland · Pull Request #128464 · python/cpython · GitHub
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gh-128152: Argument Clinic: don't parse CPP directives inside C comments #128464

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Merged
merged 2 commits into from
Jan 4, 2025
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gh-128152: Argument Clinic: don't parse CPP directives inside C comments #128464

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gh-128152: Argument Clinic: don't parse CPP directives inside C comments
erlend-aasland Jan 3, 2025
b7f00da
NEWS
erlend-aasland Jan 3, 2025
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10 changes: 10 additions & 0 deletions Lib/test/test_clinic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -740,6 +740,16 @@ def test_cloned_forced_text_signature_illegal(self):
err = "Cannot use @text_signature when cloning a function"
self.expect_failure(block, err, lineno=11)

def test_ignore_preprocessor_in_comments(self):
for dsl in "clinic", "python":
raw = dedent(f"""\
/*[{dsl} input]
# CPP directives, valid or not, should be ignored in C comments.
#
[{dsl} start generated code]*/
""")
self.clinic.parse(raw)


class ParseFileUnitTest(TestCase):
def expect_parsing_failure(
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Tools-Demos/2025-01-03-23-51-07.gh-issue-128152.IhzElS.rst
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@@ -0,0 +1,2 @@
Fix a bug where Argument Clinic's C pre-processor parser tried to parse
pre-processor directives inside C comments. Patch by Erlend Aasland.
3 changes: 3 additions & 0 deletions Tools/clinic/libclinic/cpp.py
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Expand Up @@ -132,6 +132,9 @@ def pop_stack() -> TokenAndCondition:
if line_comment:
line = before.rstrip()

if self.in_comment:
return

if not line.startswith('#'):
return

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