carbon-lang/toolchain/check/testdata/class/fail_init.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
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_init.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_init.carbon

class Class {
  var a: i32;
  var b: i32;
}

fn F() {
  // CHECK:STDERR: fail_init.carbon:[[@LINE+4]]:3: error: cannot initialize class with 2 fields from struct with 1 field [StructInitElementCountMismatch]
  // CHECK:STDERR:   {.a = 1} as Class;
  // CHECK:STDERR:   ^~~~~~~~
  // CHECK:STDERR:
  {.a = 1} as Class;
  // CHECK:STDERR: fail_init.carbon:[[@LINE+4]]:3: error: missing value for field `b` in struct initialization [StructInitMissingFieldInLiteral]
  // CHECK:STDERR:   {.a = 1, .c = 2} as Class;
  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~
  // CHECK:STDERR:
  {.a = 1, .c = 2} as Class;
  // CHECK:STDERR: fail_init.carbon:[[@LINE+4]]:3: error: cannot initialize class with 2 fields from struct with 3 fields [StructInitElementCountMismatch]
  // CHECK:STDERR:   {.a = 1, .b = 2, .c = 3} as Class;
  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~~~~~
  // CHECK:STDERR:
  {.a = 1, .b = 2, .c = 3} as Class;
}

// CHECK:STDOUT: --- fail_init.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %Class: type = class_type @Class [template]
// CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [template]
// CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [template]
// CHECK:STDOUT:   %Class.elem: type = unbound_element_type %Class, %i32 [template]
// CHECK:STDOUT:   %struct_type.a.b: type = struct_type {.a: %i32, .b: %i32} [template]
// CHECK:STDOUT:   %complete_type.705: <witness> = complete_type_witness %struct_type.a.b [template]
// CHECK:STDOUT:   %F.type: type = fn_type @F [template]
// CHECK:STDOUT:   %F: %F.type = struct_value () [template]
// CHECK:STDOUT:   %int_1.5b8: Core.IntLiteral = int_value 1 [template]
// CHECK:STDOUT:   %struct_type.a: type = struct_type {.a: Core.IntLiteral} [template]
// CHECK:STDOUT:   %int_2: Core.IntLiteral = int_value 2 [template]
// CHECK:STDOUT:   %struct_type.a.c: type = struct_type {.a: Core.IntLiteral, .c: Core.IntLiteral} [template]
// CHECK:STDOUT:   %Convert.type.1b6: type = fn_type @Convert.1, @ImplicitAs(%i32) [template]
// CHECK:STDOUT:   %impl_witness.d39: <witness> = impl_witness (imports.%import_ref.a5b), @impl.1(%int_32) [template]
// CHECK:STDOUT:   %Convert.type.035: type = fn_type @Convert.2, @impl.1(%int_32) [template]
// CHECK:STDOUT:   %Convert.956: %Convert.type.035 = struct_value () [template]
// CHECK:STDOUT:   %Convert.bound: <bound method> = bound_method %int_1.5b8, %Convert.956 [template]
// CHECK:STDOUT:   %Convert.specific_fn: <specific function> = specific_function %Convert.bound, @Convert.2(%int_32) [template]
// CHECK:STDOUT:   %int_1.5d2: %i32 = int_value 1 [template]
// CHECK:STDOUT:   %int_3: Core.IntLiteral = int_value 3 [template]
// CHECK:STDOUT:   %struct_type.a.b.c: type = struct_type {.a: Core.IntLiteral, .b: Core.IntLiteral, .c: Core.IntLiteral} [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT:     .Int = %import_ref.485
// CHECK:STDOUT:     .ImplicitAs = %import_ref.d44
// 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:     .Class = %Class.decl
// CHECK:STDOUT:     .F = %F.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %Class.decl: type = class_decl @Class [template = constants.%Class] {} {}
// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [template = constants.%F] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Class {
// CHECK:STDOUT:   %.loc12_8: %Class.elem = field_decl a, element0 [template]
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %.loc12_3: %Class.elem = var_pattern %.loc12_8
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %.var.loc12: ref %Class.elem = var <invalid>
// CHECK:STDOUT:   %.loc13_8: %Class.elem = field_decl b, element1 [template]
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %.loc13_3: %Class.elem = var_pattern %.loc13_8
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %.var.loc13: ref %Class.elem = var <invalid>
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.a.b [template = constants.%complete_type.705]
// CHECK:STDOUT:   complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = constants.%Class
// CHECK:STDOUT:   .a = %.loc12_8
// CHECK:STDOUT:   .b = %.loc13_8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %int_1.loc21: Core.IntLiteral = int_value 1 [template = constants.%int_1.5b8]
// CHECK:STDOUT:   %.loc21_10.1: %struct_type.a = struct_literal (%int_1.loc21)
// CHECK:STDOUT:   %Class.ref.loc21: type = name_ref Class, file.%Class.decl [template = constants.%Class]
// CHECK:STDOUT:   %.loc21_10.2: ref %Class = temporary_storage
// CHECK:STDOUT:   %.loc21_10.3: ref %Class = temporary %.loc21_10.2, <error>
// CHECK:STDOUT:   %.loc21_12: ref %Class = converted %.loc21_10.1, %.loc21_10.3
// CHECK:STDOUT:   %int_1.loc26: Core.IntLiteral = int_value 1 [template = constants.%int_1.5b8]
// CHECK:STDOUT:   %int_2.loc26: Core.IntLiteral = int_value 2 [template = constants.%int_2]
// CHECK:STDOUT:   %.loc26_18.1: %struct_type.a.c = struct_literal (%int_1.loc26, %int_2.loc26)
// CHECK:STDOUT:   %Class.ref.loc26: type = name_ref Class, file.%Class.decl [template = constants.%Class]
// CHECK:STDOUT:   %impl.elem0: %Convert.type.1b6 = impl_witness_access constants.%impl_witness.d39, element0 [template = constants.%Convert.956]
// CHECK:STDOUT:   %Convert.bound: <bound method> = bound_method %int_1.loc26, %impl.elem0 [template = constants.%Convert.bound]
// CHECK:STDOUT:   %Convert.specific_fn: <specific function> = specific_function %Convert.bound, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn]
// CHECK:STDOUT:   %int.convert_checked: init %i32 = call %Convert.specific_fn(%int_1.loc26) [template = constants.%int_1.5d2]
// CHECK:STDOUT:   %.loc26_18.2: init %i32 = converted %int_1.loc26, %int.convert_checked [template = constants.%int_1.5d2]
// CHECK:STDOUT:   %.loc26_18.3: ref %Class = temporary_storage
// CHECK:STDOUT:   %.loc26_18.4: ref %i32 = class_element_access %.loc26_18.3, element0
// CHECK:STDOUT:   %.loc26_18.5: init %i32 = initialize_from %.loc26_18.2 to %.loc26_18.4 [template = constants.%int_1.5d2]
// CHECK:STDOUT:   %.loc26_18.6: ref %Class = temporary %.loc26_18.3, <error>
// CHECK:STDOUT:   %.loc26_20: ref %Class = converted %.loc26_18.1, %.loc26_18.6
// CHECK:STDOUT:   %int_1.loc31: Core.IntLiteral = int_value 1 [template = constants.%int_1.5b8]
// CHECK:STDOUT:   %int_2.loc31: Core.IntLiteral = int_value 2 [template = constants.%int_2]
// CHECK:STDOUT:   %int_3: Core.IntLiteral = int_value 3 [template = constants.%int_3]
// CHECK:STDOUT:   %.loc31_26.1: %struct_type.a.b.c = struct_literal (%int_1.loc31, %int_2.loc31, %int_3)
// CHECK:STDOUT:   %Class.ref.loc31: type = name_ref Class, file.%Class.decl [template = constants.%Class]
// CHECK:STDOUT:   %.loc31_26.2: ref %Class = temporary_storage
// CHECK:STDOUT:   %.loc31_26.3: ref %Class = temporary %.loc31_26.2, <error>
// CHECK:STDOUT:   %.loc31_28: ref %Class = converted %.loc31_26.1, %.loc31_26.3
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT: