https://github.com/python/cpython/commit/1b457d3bbc528184f373bdcac47f0951052f90b7 commit: 1b457d3bbc528184f373bdcac47f0951052f90b7 branch: 3.15 author: Miss Islington (bot) <[email protected]> committer: gpshead <[email protected]> date: 2026-06-14T11:37:23-07:00 summary:
[3.15] Skip test_highly_nested_objects_decoding during the PGO profile task. (GH-151460) (#151468) Skip test_highly_nested_objects_decoding during the PGO profile task. (GH-151460) Since the recursion guard tracks real C-stack bounds (gh-91079), this test asserts that 500k nesting levels overflow the stack margin. On a 64 MiB stack (some Nix build envs use one that large), the optimized interpreter uses ~160 bytes/level (raises at ~420k levels) so the assertion holds with only ~16% margin; the PGO *instrumented* stage inlines less, its per-level scanner frames are smaller, and the 500k-deep decode completes -- "RecursionError not raised" fails the profile run and aborts `make profile-opt`. Upstream's skip_if_unlimited_stack_size (gh-143460) only covers RLIM_INFINITY, not large-finite stacks like ours. We could also keep playing whack a mole and raise the 500k to a much larger number... but there's little value in PGO training on this test anyways. (cherry picked from commit e91f68ab40e25dc964afb872eb75873c8b1838d6) Co-authored-by: Gregory P. Smith <[email protected]> files: M Lib/test/test_json/test_recursion.py diff --git a/Lib/test/test_json/test_recursion.py b/Lib/test/test_json/test_recursion.py index ffd3404e6f77a07..d732fc80cf1cf30 100644 --- a/Lib/test/test_json/test_recursion.py +++ b/Lib/test/test_json/test_recursion.py @@ -68,6 +68,7 @@ def default(self, o): self.fail("didn't raise ValueError on default recursion") + @support.skip_if_pgo_task # fails during PGO training w/ some stack sizes @support.skip_if_unlimited_stack_size @support.skip_emscripten_stack_overflow() @support.skip_wasi_stack_overflow() _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
