// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/fail_extend_impl_scope.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/fail_extend_impl_scope.carbon

interface I {}

// CHECK:STDERR: fail_extend_impl_scope.carbon:[[@LINE+3]]:1: error: `extend impl` can only be used in a class [ExtendImplOutsideClass]
// CHECK:STDERR: extend impl i32 as I {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~
extend impl i32 as I {}

// CHECK:STDOUT: --- fail_extend_impl_scope.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [template]
// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT:   %.1: Core.IntLiteral = int_value 32 [template]
// CHECK:STDOUT:   %Int.type: type = fn_type @Int [template]
// CHECK:STDOUT:   %Int: %Int.type = struct_value () [template]
// CHECK:STDOUT:   %i32: type = int_type signed, %.1 [template]
// CHECK:STDOUT:   %.2: <witness> = interface_witness () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT:     .Int = %import_ref
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [template = constants.%I.type] {} {}
// CHECK:STDOUT:   impl_decl @impl [template] {} {
// CHECK:STDOUT:     %.loc16_13.1: Core.IntLiteral = int_value 32 [template = constants.%.1]
// CHECK:STDOUT:     %int.make_type_signed: init type = call constants.%Int(%.loc16_13.1) [template = constants.%i32]
// CHECK:STDOUT:     %.loc16_13.2: type = value_of_initializer %int.make_type_signed [template = constants.%i32]
// CHECK:STDOUT:     %.loc16_13.3: type = converted %int.make_type_signed, %.loc16_13.2 [template = constants.%i32]
// CHECK:STDOUT:     %I.ref: type = name_ref I, file.%I.decl [template = constants.%I.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @impl: %.loc16_13.3 as %I.ref {
// CHECK:STDOUT:   %.loc16_22: <witness> = interface_witness () [template = constants.%.2]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   witness = %.loc16_22
// CHECK:STDOUT: }
// CHECK:STDOUT: