CPython 3.14 fully removed the long-deprecated fallback from int() to
__trunc__. Classes that want int(x) support must implement __int__ or
__index__; math.trunc(x) continues to use __trunc__.
Delete the __trunc__ branch in PyObject::try_int so a class with only
__trunc__ now reaches the existing TypeError arm, matching CPython.
Unmasks test_int.IntTestCases.test_intconversion.
* Enforce int_max_str_digits on int-to-str conversions
The str-to-int direction already enforced sys.get_int_max_str_digits()
via bytes_to_int; the int-to-str direction did not. CPython 3.14 enforces
both per PEP 644.
Adds check_int_to_str_digits helper in builtins::int (bit-count fast path
+ digit upper-bound from log10(2)), wired into the four Python-level
entry points: repr, the str fast path in protocol::object, int.__format__
(decimal/n/empty spec only — binary bases x/o/b are exempt per CPython),
and the DecimalD/I/U branches of vm::cformat for both str % and bytes %.
Unmasks 8 expectedFailure tests across test_int (max_str_digits, DoS
prevention, int_from_other_bases — each mirrored in IntSubclass),
test_ast (test_repr_large_input_crash) and test_reprlib (test_numbers).
Boundary cases (4299/4300/4301 digits at limit=4300) match CPython 3.14.4.
* Skip int-to-str DoS test on platforms without time.get_clock_info
The test_denial_of_service_prevented_int_to_str regression test uses
support.Stopwatch, which calls time.get_clock_info('monotonic'). In
RustPython that function is gated to unix/windows targets only, so on
wasm32-wasip1 it surfaces as AttributeError and breaks the wasm-wasi CI.
Guard the test with skipUnless(hasattr(time, 'get_clock_info'), ...) so
it runs everywhere it can and is skipped on wasm.
Also narrow is_decimal_int_format to Number(Case::Lower): 'N' is rejected
by format_int as UnknownFormatCode, so excluding it preserves that error
path instead of intercepting it with the digit-limit check.
* Add TODO: RUSTPYTHON marker to skipUnless reason
scripts/update_lib uses TODO: RUSTPYTHON markers inside unittest
decorator reason strings to identify and migrate custom RustPython
patches across CPython library updates.
* Use expectedFailureIf for wasm get_clock_info gap
skipUnless silently hides the test forever; expectedFailureIf surfaces
unexpected success once RustPython implements time.get_clock_info on
wasm, prompting marker removal.
