✓
Passing This code compiles and runs correctly.
Code
// PINS: the caret names the line carrying the fault. This site was
// audited in challenge 023's parser sweep: it previously reported one
// line off the construct it describes (the parse cursor is a 0-based
// buffer index and the reporter expects a 1-based line; this site
// handed over the wrong adjustment).
import std/compiler
tor pick { x: i32 }
| chosen { f: i32 }[tag
Frontend must reject with:
CONTAINS branch annotation missing closing ']'
ERROR_AT 11