Brandon ThomasandClaude Opus 5.5 fc8fea031c Never crash: reject deeply nested expressions instead of overflowing the stack ...

An expression nested about 60 brackets deep overflowed the stack of a 2 MiB thread in the
JavaScript parser (release and debug; ~200 levels on 8 MiB), which aborts the whole app: it
can't be caught. The array-maths rewrite also nests one call per arithmetic operator, so a long
sum went the same way, and the rewriter itself recursed per bracket. rewrite() now measures the
nesting (brackets plus chains of prefix operators) before and after rewriting and turns an
expression deeper than MAX_NESTING (32) into a RangeError; check_syntax reports the same error.
Also replaces the unreachable!() in the bracket-tree builder with a let-chain, and denies the
panic lints in the crate.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

2026-10-04 13:22:36 -04:00

..

src

Never crash: reject deeply nested expressions instead of overflowing the stack

2026-10-04 13:22:36 -04:00

Cargo.toml

M9.9: text style runs + paragraph settings

2026-10-02 10:34:13 -04:00