045 for manual each error

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

Code

import std/control
import app/fs
app/fs:open(path: "outer.txt"): f |> for(0..3)
    ! each _ |> app/fs:close(file: f)  // ERROR! Would run 3 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 'f' inside @scope boundary. Handle outside the scope or escape via branch constructor.
  --> tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/330_045_for_manual_each_error/input.k:4:4

❌ 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

← 044 for manual done ok 046 for auto done ok →