carbon-lang/toolchain/check/testdata/impl/fail_redefinition.carbon

// 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

interface I {}

impl i32 as I {}

// CHECK:STDERR: fail_redefinition.carbon:[[@LINE+6]]:1: ERROR: Redefinition of `impl i32 as I`.
// CHECK:STDERR: impl i32 as I {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR: fail_redefinition.carbon:[[@LINE-5]]:1: Previous definition was here.
// CHECK:STDERR: impl i32 as I {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~
impl i32 as I {}

// CHECK:STDOUT: --- fail_redefinition.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %.1: type = interface_type @I [template]
// CHECK:STDOUT:   %.2: <witness> = interface_witness () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [template = constants.%.1] {}
// CHECK:STDOUT:   impl_decl @impl {
// CHECK:STDOUT:     %I.ref.loc9: type = name_ref I, %I.decl [template = constants.%.1]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   impl_decl @impl {
// CHECK:STDOUT:     %I.ref.loc17: type = name_ref I, %I.decl [template = constants.%.1]
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: I = bind_symbolic_name Self [symbolic]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @impl: i32 as I {
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   witness = <unexpected instref inst+6>
// CHECK:STDOUT: }
// CHECK:STDOUT: