24 lines
890 B
Python
24 lines
890 B
Python
#!/usr/bin/env python3
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"""Regress VC6 C89 compatibility of type_new_visit_slots() loop index."""
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import re
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from pathlib import Path
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source = Path("cpython/Objects/typeobject.c").read_text()
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match = re.search(
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r"\nstatic int\ntype_new_visit_slots\(type_new_ctx \*ctx\)\n\{(.*?)\n\}",
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source,
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re.S,
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)
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assert match, "type_new_visit_slots definition missing"
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body = match.group(1)
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assert re.match(r"\s*PyObject \*slots = ctx->slots;\s*Py_ssize_t nslot = ctx->nslot;", body), (
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"type_new_visit_slots opening locals changed unexpectedly"
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)
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assert re.search(r"\bPy_ssize_t i;", body), (
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"type_new_visit_slots: C89 loop index i must be declared before statements"
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)
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assert re.search(r"for\s*\(\s*i\s*=\s*0\s*;\s*i\s*<\s*nslot\s*;\s*i\+\+\s*\)", body), (
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"type_new_visit_slots: preserve loop start, bound, and increment"
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)
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print("type_new_visit_slots C89 loop index: PASS")
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