feat: support checked explicit sentinel slices

2026-10-23 11:18:08 +02:00
parent 7cb4ace0fa
commit 8ab5b71a0c
7 changed files with 465 additions and 31 deletions
@@ -306,9 +306,13 @@ lower_compound_expr :: proc(state: ^State, expr_id: hir.Expr_Id) -> ir.Instructi
 				args[index] = lower_nested_expr(state, arg)
 			}
 		}
+		checked_sentinel := ir.INVALID_INSTRUCTION
+		if expr.right != hir.INVALID_EXPR {
+			checked_sentinel = lower_nested_expr(state, expr.right)
+		}
 		return append_instruction(state, ir.Instruction{
 			op=.Slice, span=expr.span, type=expr.type, args=args,
-			target=ir.INVALID_REF, a=container, b=ir.INVALID_INSTRUCTION,
+			target=ir.INVALID_REF, a=container, b=checked_sentinel,
 			diagnostic=source.INVALID_DIAGNOSTIC,
 		})
 	case .Unwrap: