mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 18:31:08 +01:00
Richard SmithandGeoff Romer
ce50f181f1
When a `var` is not explicitly given an initializer, initialize it in one of two ways: * If its type implements the new interface `Core.Default`, call `Core.Default.Op` to initialize it. * Otherwise, if its type implements `UnformedInit`, leave it in an unformed state. For now, this is always an uninitialized state, but that will change in the future. * If neither of those apply, the `var` declaration is ill-formed. This is a step towards implementing leads decision #6739 and proposals #257 and #5913. Assisted-by: Gemini 3.1 Pro via Antigravity --------- Co-authored-by: Geoff Romer <gromer@google.com>
55 lines
3.1 KiB
Plaintext
55 lines
3.1 KiB
Plaintext
// 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
|
|
//
|
|
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
|
|
//
|
|
// AUTOUPDATE
|
|
// TIP: To test this file alone, run:
|
|
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/var/global_decl.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/var/global_decl.carbon
|
|
|
|
//@dump-sem-ir-begin
|
|
var x: {.v: ()} = {.v = ()};
|
|
//@dump-sem-ir-end
|
|
|
|
// CHECK:STDOUT: --- global_decl.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
|
|
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
|
|
// CHECK:STDOUT: %struct_type.v: type = struct_type {.v: %empty_tuple.type} [concrete]
|
|
// CHECK:STDOUT: %pattern_type: type = pattern_type %struct_type.v [concrete]
|
|
// CHECK:STDOUT: %struct: %struct_type.v = struct_value (%empty_tuple) [concrete]
|
|
// CHECK:STDOUT: %.c0c: ref %empty_tuple.type = struct_access file.%x.var, element0 [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: file {
|
|
// CHECK:STDOUT: name_binding_decl {
|
|
// CHECK:STDOUT: %x.patt: %pattern_type = ref_binding_pattern x [concrete]
|
|
// CHECK:STDOUT: %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %x.var: ref %struct_type.v = var %x.var_patt [concrete]
|
|
// CHECK:STDOUT: %.loc14_15: type = splice_block %struct_type.v [concrete = constants.%struct_type.v] {
|
|
// CHECK:STDOUT: %.loc14_14.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc14_14.2: type = converted %.loc14_14.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %struct_type.v: type = struct_type {.v: %empty_tuple.type} [concrete = constants.%struct_type.v]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %x: ref %struct_type.v = ref_binding x, %x.var [concrete = %x.var]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @__global_init() {
|
|
// CHECK:STDOUT: !entry:
|
|
// CHECK:STDOUT: %.loc14_26.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc14_27.1: %struct_type.v = struct_literal (%.loc14_26.1) [concrete = constants.%struct]
|
|
// CHECK:STDOUT: %.loc14_27.2: ref %empty_tuple.type = struct_access file.%x.var, element0 [concrete = constants.%.c0c]
|
|
// CHECK:STDOUT: %.loc14_26.2: init %empty_tuple.type = tuple_init () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc14_27.3: init %empty_tuple.type = converted %.loc14_26.1, %.loc14_26.2 [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc14_27.4: init %struct_type.v to file.%x.var = struct_init (%.loc14_27.3) [concrete = constants.%struct]
|
|
// CHECK:STDOUT: %.loc14_1: init %struct_type.v = converted %.loc14_27.1, %.loc14_27.4 [concrete = constants.%struct]
|
|
// CHECK:STDOUT: assign file.%x.var, %.loc14_1
|
|
// CHECK:STDOUT: <elided>
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|