Add blog post: Pony's Errors Stop Unwinding the Stack#1340
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Adds a blog post about the coming change to Pony's error handling: replacing stack unwinding with error-flag returns. It covers the aarch64 segfault that pushed me to do it — the one Joe, Sylvan, and I came to believe is a bug down in LLVM — the years we'd spent circling the idea, the branch-predictor reasoning behind it, and what the new mechanism does.
The change itself is ponylang/ponyc#5002, still in review, so the post is written for what's coming: present tense for how Pony works today, the new mechanism framed as the change. Publishes 2026-05-26 at 2:30pm ET.