giles 4dde8ba684 Fix JIT infinite recompile loop for closure functions ...

When a JIT-compiled function failed on first call, the function name
was added to _jit_warned but this was never checked before recompiling.
Closures like parse-loop create new lambda instances on each call,
each with l_compiled=None, triggering fresh compilation + failure
in an infinite loop.

Fix: check _jit_warned before attempting compilation, and mark the
lambda with jit_failed_sentinel on first-call failure so the same
instance also stops retrying.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-29 19:37:12 +00:00

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