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carbon-lang/toolchain/check/testdata/class/redeclaration.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

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// 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/convert.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/class/redeclaration.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/redeclaration.carbon
class Class;
class Class {
fn F[self: Self](b: ());
}
fn Class.F[unused self: Self](unused b: ()) {}
// CHECK:STDOUT: --- redeclaration.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Class: type = class_type @Class [concrete]
// CHECK:STDOUT: %pattern_type.138: type = pattern_type %Class [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
// CHECK:STDOUT: %pattern_type.cb1: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT: %Class.F.type: type = fn_type @Class.F [concrete]
// CHECK:STDOUT: %Class.F: %Class.F.type = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Class = %Class.decl.loc15
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Class.decl.loc15: type = class_decl @Class [concrete = constants.%Class] {} {}
// CHECK:STDOUT: %Class.decl.loc17: type = class_decl @Class [concrete = constants.%Class] {} {}
// CHECK:STDOUT: %Class.F.decl: %Class.F.type = fn_decl @Class.F [concrete = constants.%Class.F] {
// CHECK:STDOUT: %self.param_patt: %pattern_type.138 = value_param_pattern [concrete]
// CHECK:STDOUT: %self.patt: %pattern_type.138 = at_binding_pattern self, %self.param_patt [concrete]
// CHECK:STDOUT: %b.param_patt: %pattern_type.cb1 = value_param_pattern [concrete]
// CHECK:STDOUT: %b.patt: %pattern_type.cb1 = at_binding_pattern b, %b.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param.loc21: %Class = value_param call_param0
// CHECK:STDOUT: %Self.ref.loc21: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self.loc21: %Class = value_binding self, %self.param.loc21
// CHECK:STDOUT: %b.param.loc21: %empty_tuple.type = value_param call_param1
// CHECK:STDOUT: %.loc21_42.1: type = splice_block %.loc21_42.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT: %.loc21_42.2: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %.loc21_42.3: type = converted %.loc21_42.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b.loc21: %empty_tuple.type = value_binding b, %b.param.loc21
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Class {
// CHECK:STDOUT: %Class.F.decl: %Class.F.type = fn_decl @Class.F [concrete = constants.%Class.F] {
// CHECK:STDOUT: %self.param_patt: %pattern_type.138 = value_param_pattern [concrete]
// CHECK:STDOUT: %self.patt: %pattern_type.138 = at_binding_pattern self, %self.param_patt [concrete]
// CHECK:STDOUT: %b.param_patt: %pattern_type.cb1 = value_param_pattern [concrete]
// CHECK:STDOUT: %b.patt: %pattern_type.cb1 = at_binding_pattern b, %b.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param.loc18: %Class = value_param call_param0
// CHECK:STDOUT: %Self.ref.loc18: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self.loc18: %Class = value_binding self, %self.param.loc18
// CHECK:STDOUT: %b.param.loc18: %empty_tuple.type = value_param call_param1
// CHECK:STDOUT: %.loc18_24.1: type = splice_block %.loc18_24.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT: %.loc18_24.2: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %.loc18_24.3: type = converted %.loc18_24.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b.loc18: %empty_tuple.type = value_binding b, %b.param.loc18
// CHECK:STDOUT: }
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class
// CHECK:STDOUT: .F = %Class.F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Class.F(%self.param.loc21: %Class, %b.param.loc21: %empty_tuple.type) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: