012 multiple defaults error

✓ Passing This code compiles and runs correctly.

Code

// Test 643: Multiple Defaults Error (MUST_FAIL)
// Tests that having multiple [default] definitions for the same name is an error
//
// This is a STDLIB BUG - only one default per name is allowed
// Expected: Compilation error "Multiple default implementations for 'test'"

~import "$std/build"
~import "$app/lib/extra_build"

// This file defines ONE default
~[default]
std.build:step(name: "test") {
    echo "Main test implementation"
}

input.kz

Error Verification

Actual Compiler Output

error[KORU002]: module not found: '$std/compiler'
  --> tests/regression/500_INTEGRATION_TESTING/510_NEGATIVE_TESTS/510_012_multiple_defaults_error/input.kz:1:1
    |
  1 | ~import "$std/compiler"
    | ^
  hint: check the import path, koru.json paths, and KORU_STDLIB/KORU_PATH environment variables

Imported Files

// This module ALSO defines a default "test" - this is the error!

~import "$std/build"

~[default]
std.build:step(name: "test") {
    echo "Extra test implementation - THIS IS A BUG!"
}

lib/extra_build.kz

Test Configuration

MUST_FAIL

Expected Behavior:

FRONTEND_COMPILE_ERROR

← 011 invalid module qualifier 013 ambiguous override error →