state variable constraint violation

✓ Passing This code compiles and runs correctly.

Code

~import app/data
~app/data:gc-alloc()
| allocated a |> app/data:process(d: a)  // ❌ ERROR: [gc] doesn't satisfy M'owned|borrowed

input.kz

Must contain:

branches are not handled

Error Verification

Actual Compiler Output

error[KORU022]: event 'app.data:process' invoked in pipeline but its branches are not handled
  --> tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/524_state_variable_constraint_violation/input.kz:3:0

error[KORU022]: branch 'done' must be handled but no continuation found
  --> tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/524_state_variable_constraint_violation/input.kz:3:0

❌ Compiler coordination error: Incomplete branch coverage
error: CompilerCoordinationFailed
/Users/larsde/src/koru/tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/524_state_variable_constraint_violation/backend.zig:94:13: 0x10262738b in emit (backend)
            return error.CompilerCoordinationFailed;
            ^
/Users/larsde/src/koru/tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/524_state_variable_constraint_violation/backend.zig:190:28: 0x102628077 in main (backend)
    const generated_code = try RuntimeEmitter.emit(compile_allocator, final_ast);
                           ^

Imported Files

const std = @import("std");
const Data = struct { value: i32 };

~pub event gc-alloc {}
| allocated *Data<gc>  // GC-managed, NOT owned or borrowed

~proc gc-alloc|zig {
    const allocator = std.heap.page_allocator;
    const d = allocator.create(Data) catch unreachable;
    d.* = Data{ .value = 42 };
    return .{ .allocated = d };
}

// Generic processor constrained to owned OR borrowed ONLY
~pub event process { d: *Data<M'owned|borrowed> }
| done *Data<M'owned|borrowed>

~proc process|zig {
    return .{ .done = d };
}

data.kz

// Generic processor constrained to owned OR borrowed ONLY

~pub event process { data: *Data<M'owned|borrowed> }
| done *Data<M'owned|borrowed>

~proc process|zig {
    return .{ .done = data };
}

processor.kz

Test Configuration

MUST_FAIL

← state variable constrained accepts state variable chaining →