giles 2727a2ed8c Skip JIT for lambdas with closure bindings ...

The closure merging in jit_compile_lambda (copying globals + injecting
closure bindings into vm_env_ref) produces incorrect variable resolution
for inner functions. Symptoms: sx-parse's read-list-loop mishandles
closing parens (siblings become children), parser produces wrong ASTs.

Fix: vm_call skips JIT compilation for lambdas with non-empty closures.
These run on CEK which handles closures correctly. Top-level defines
(empty closure) are still JIT-compiled.

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

2026-03-23 18:45:40 +00:00

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