mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 21:01:21 +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>
60 lines
2.6 KiB
Plaintext
60 lines
2.6 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_import.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/var/global_decl_import.carbon
|
|
|
|
// --- decl.carbon
|
|
|
|
library "[[@TEST_NAME]]";
|
|
|
|
var x: {.v: ()} = {.v = ()};
|
|
|
|
// --- import.carbon
|
|
|
|
library "[[@TEST_NAME]]";
|
|
|
|
import library "decl";
|
|
|
|
fn G() -> {.v: ()} {
|
|
//@dump-sem-ir-begin
|
|
return x;
|
|
//@dump-sem-ir-end
|
|
}
|
|
|
|
// CHECK:STDOUT: --- import.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: %.c0c: ref %empty_tuple.type = struct_access imports.%x.var, element0 [concrete]
|
|
// CHECK:STDOUT: %struct: %struct_type.v = struct_value (%empty_tuple) [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: imports {
|
|
// CHECK:STDOUT: %Main.x: ref %struct_type.v = import_ref Main//decl, x, loaded [concrete = %x.var]
|
|
// 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: %x.var: ref %struct_type.v = var %x.var_patt [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @G() -> out %return.param: %struct_type.v {
|
|
// CHECK:STDOUT: !entry:
|
|
// CHECK:STDOUT: %x.ref: ref %struct_type.v = name_ref x, imports.%Main.x [concrete = imports.%x.var]
|
|
// CHECK:STDOUT: %.loc8_10.1: ref %empty_tuple.type = struct_access %x.ref, element0 [concrete = constants.%.c0c]
|
|
// CHECK:STDOUT: %.loc8_10.2: init %empty_tuple.type = tuple_init () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc8_10.3: init %empty_tuple.type = converted %.loc8_10.1, %.loc8_10.2 [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc8_10.4: init %struct_type.v = struct_init (%.loc8_10.3) [concrete = constants.%struct]
|
|
// CHECK:STDOUT: %.loc8_11: init %struct_type.v = converted %x.ref, %.loc8_10.4 [concrete = constants.%struct]
|
|
// CHECK:STDOUT: return %.loc8_11
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|