carbon-lang/toolchain/check/testdata/index/fail_empty_tuple_access.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

fn F() {}

fn Run() {
  // CHECK:STDERR: fail_empty_tuple_access.carbon:[[@LINE+3]]:3: ERROR: Tuple element index `0` is past the end of type `()`.
  // CHECK:STDERR:   F()[0];
  // CHECK:STDERR:   ^~~~~~
  F()[0];
}

// CHECK:STDOUT: --- fail_empty_tuple_access.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %.1: type = tuple_type () [template]
// CHECK:STDOUT:   %.2: i32 = int_literal 0 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .F = %F
// CHECK:STDOUT:     .Run = %Run
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %F: <function> = fn_decl @F [template] {}
// CHECK:STDOUT:   %Run: <function> = fn_decl @Run [template] {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %F.ref: <function> = name_ref F, file.%F [template = file.%F]
// CHECK:STDOUT:   %.loc13_4.1: init () = call %F.ref()
// CHECK:STDOUT:   %.loc13_7: i32 = int_literal 0 [template = constants.%.2]
// CHECK:STDOUT:   %.loc13_4.2: ref () = temporary_storage
// CHECK:STDOUT:   %.loc13_4.3: ref () = temporary %.loc13_4.2, %.loc13_4.1
// CHECK:STDOUT:   %.loc13_8: ref <error> = tuple_index %.loc13_4.3, <error>
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT: