Files
carbon-lang/toolchain/check/testdata/let/shadowed_decl.carbon
T
Richard Smith 05cc09daca Fix cross-package signature mismatches. (#7232)
Fixes link failures when referencing a symbol involving a fingerprint
from a different package.

Previously we included the `Namespace`'s `import_id` as part of its
fingerprint, which caused local and imported namespaces to get different
fingerprints. We now store the `import_id` on the `NameScope` instead of
on the `Namespace` inst to avoid this problem.

Also, when we reach a package-level `NameScopeId`, consistently
fingerprint it as a (package name, library name) pair. Previously the
fingerprinting depended on whether it was imported or not, as an
imported `NameScopeId` had a parent scope (the current package). We need
to include the library name here so that private entities with the same
name in different libraries have different fingerprints.
2026-05-21 00:02:29 +00:00

125 lines
10 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/int.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/let/shadowed_decl.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/let/shadowed_decl.carbon
fn F(unused a: i32) -> i32 {
let a: i32 = 1;
// TODO: Reject this due to ambiguity.
return a;
}
// CHECK:STDOUT: --- shadowed_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.c6b: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %.70c: Core.Form = init_form %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %ImplicitAs.type.649: type = generic_interface_type @ImplicitAs [concrete]
// CHECK:STDOUT: %ImplicitAs.generic: %ImplicitAs.type.649 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.type.544: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.ec3: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.fb6: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.1a5, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.ef7: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.e6b: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.ef7 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.544 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.fb6) [concrete]
// CHECK:STDOUT: %ImplicitAs.WithSelf.Convert.type.367: type = fn_type @ImplicitAs.WithSelf.Convert, @ImplicitAs.WithSelf(%i32, %ImplicitAs.facet) [concrete]
// CHECK:STDOUT: %.205: type = fn_type_with_self_type %ImplicitAs.WithSelf.Convert.type.367, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.ImplicitAs.impl.Convert.e6b [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.e6b, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_1.d5e: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.b5d: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%N) [symbolic]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.c85: %Int.as.Copy.impl.Op.type.b5d = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.32d: <witness> = impl_witness imports.%Copy.impl_witness_table.07a, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.4a0: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.c4a: %Int.as.Copy.impl.Op.type.4a0 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %i32, (%Copy.impl_witness.32d) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.afe: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet) [concrete]
// CHECK:STDOUT: %.a5f: type = fn_type_with_self_type %Copy.WithSelf.Op.type.afe, %Copy.facet [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Copy.impl.Op.c4a, @Int.as.Copy.impl.Op(%int_32) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: .Copy = %Core.Copy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: %Core.ImplicitAs: %ImplicitAs.type.649 = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: %Core.import_ref.dd3: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert (constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.ec3)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.1a5 = impl_witness_table (%Core.import_ref.dd3), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
// CHECK:STDOUT: %Core.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
// CHECK:STDOUT: %Core.import_ref.809: @Int.as.Copy.impl.%Int.as.Copy.impl.Op.type (%Int.as.Copy.impl.Op.type.b5d) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Int.as.Copy.impl.%Int.as.Copy.impl.Op (constants.%Int.as.Copy.impl.Op.c85)]
// CHECK:STDOUT: %Copy.impl_witness_table.07a = impl_witness_table (%Core.import_ref.809), @Int.as.Copy.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %a.param_patt: %pattern_type.c6b = value_param_pattern [concrete]
// CHECK:STDOUT: %a.patt.loc15: %pattern_type.c6b = at_binding_pattern a, %a.param_patt [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.c6b = out_param_pattern [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.c6b = return_slot_pattern %return.param_patt, %i32.loc15_24 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc15_24: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc15: Core.Form = init_form %i32.loc15_24 [concrete = constants.%.70c]
// CHECK:STDOUT: %a.param: %i32 = value_param call_param0
// CHECK:STDOUT: %i32.loc15_16: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %a.loc15: %i32 = value_binding a, %a.param
// CHECK:STDOUT: %return.param: ref %i32 = out_param call_param1
// CHECK:STDOUT: %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%a.param: %i32) -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt.loc16: %pattern_type.c6b = value_binding_pattern a [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %i32.loc16: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %impl.elem0.loc16: %.205 = impl_witness_access constants.%ImplicitAs.impl_witness.fb6, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.e6b]
// CHECK:STDOUT: %bound_method.loc16_16.1: <bound method> = bound_method %int_1, %impl.elem0.loc16 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn.loc16: <specific function> = specific_function %impl.elem0.loc16, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc16_16.2: <bound method> = bound_method %int_1, %specific_fn.loc16 [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc16_16.2(%int_1) [concrete = constants.%int_1.d5e]
// CHECK:STDOUT: %.loc16_16.1: %i32 = value_of_initializer %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_1.d5e]
// CHECK:STDOUT: %.loc16_16.2: %i32 = converted %int_1, %.loc16_16.1 [concrete = constants.%int_1.d5e]
// CHECK:STDOUT: %a.loc16: %i32 = value_binding a, %.loc16_16.2
// CHECK:STDOUT: %a.ref: %i32 = name_ref a, %a.loc16
// CHECK:STDOUT: %impl.elem0.loc18: %.a5f = impl_witness_access constants.%Copy.impl_witness.32d, element0 [concrete = constants.%Int.as.Copy.impl.Op.c4a]
// CHECK:STDOUT: %bound_method.loc18_10.1: <bound method> = bound_method %a.ref, %impl.elem0.loc18
// CHECK:STDOUT: %specific_fn.loc18: <specific function> = specific_function %impl.elem0.loc18, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_10.2: <bound method> = bound_method %a.ref, %specific_fn.loc18
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc18_10.2(%a.ref)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT: