004 loop body discharges outer

✓ Passing Passing: the compiler rejects this program as expected.

Code

// PIN: outer resource discharged inside the ! each body.
// Even with a single-iteration loop (0..1), the body is a repeating scope
// boundary — discharging there violates the @scope rule.
// Austral rule: "a linear value defined outside a loop cannot appear in the loop body."
//
// Grounding:
//   Legal form (discharge in | done): 330_044_for_manual_done_ok/input.kz:3-6
//   Illegal form (discharge in ! each): 330_045_for_manual_each_error/input.kz:3-6
//     (330_045 uses 0..3; this test uses 0..1 to isolate the scope issue from count)
//   for + each + done structure: 330_032_nested_for_scopes/input.kz:4-9
//   KORU032 message: "Cannot discharge outer-scope resource inside @scope boundary"
import std/control
import app/fs
app/fs:open(path: "outer.txt"): outer_f |> for(0..1)
    ! each _ |> app/fs:close(file: outer_f)  // ERROR: outer_f is in @scope, body runs once but COULD run N times
    | done |> _

input.k

Supporting Files

// Library module: fs
// Defines filesystem operations with cleanup obligations

const std = @import("std");

// File type with phantom states
const File = struct {
    handle: i32,
};

// Open a file - returns opened! state (requires cleanup)
~pub tor open { path: string } -> *File<opened!>

~proc open|zig {
    std.debug.print("Opening file: {s}\n", .{path});
    const allocator = std.heap.page_allocator;
    const f = allocator.create(File) catch unreachable;
    f.* = File{ .handle = 42 };
    return f;
}

// Close a file - CONSUMES opened! state (disposes the resource)
~pub tor close { file: *File<!opened> }

~proc close|zig {
    std.debug.print("Closing file\n", .{});
}

fs.kz

Actual compiler output

error[KORU032]: Cannot discharge outer-scope resource 'outer_f' inside @scope boundary. Handle outside the scope or escape via branch constructor.
  --> tests/regression/300_ADVANCED_FEATURES/335_OBLIGATION_STRESS/335_004_loop_body_discharges_outer/input.k:15:4

❌ Compiler coordination error: Auto-discharge failed (multiple disposal options or no disposal event)
   (set KORU_BACKEND_TRACE=1 for the backend return trace)

Must contain:

KORU032

Flows

flow ~open click a branch to expand · @labels scroll to their anchor

open (path: "outer.txt")

Test Configuration

MUST_ERROR

← 003 if then discharges else drops strict 005 nested loop inner discharges outer →