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carbon-lang/toolchain/check/testdata/class/inheritance/base_field.carbon
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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/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/class/inheritance/base_field.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/inheritance/base_field.carbon
base class Base {
var a: i32;
var b: i32;
var c: i32;
}
class Derived {
extend base: Base;
var d: i32;
var e: i32;
}
fn Access(p: Derived*) -> i32* {
return &(*p).c;
}
// CHECK:STDOUT: --- base_field.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Base: type = class_type @Base [concrete]
// 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: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %Base.elem: type = unbound_element_type %Base, %i32 [concrete]
// CHECK:STDOUT: %struct_type.a.b.c: type = struct_type {.a: %i32, .b: %i32, .c: %i32} [concrete]
// CHECK:STDOUT: %complete_type.7bc: <witness> = complete_type_witness %struct_type.a.b.c [concrete]
// CHECK:STDOUT: %Derived: type = class_type @Derived [concrete]
// CHECK:STDOUT: %Derived.elem.de2: type = unbound_element_type %Derived, %Base [concrete]
// CHECK:STDOUT: %Derived.elem.6ba: type = unbound_element_type %Derived, %i32 [concrete]
// CHECK:STDOUT: %struct_type.base.d.e.768: type = struct_type {.base: %Base, .d: %i32, .e: %i32} [concrete]
// CHECK:STDOUT: %complete_type.a4e: <witness> = complete_type_witness %struct_type.base.d.e.768 [concrete]
// CHECK:STDOUT: %ptr.128: type = ptr_type %Derived [concrete]
// CHECK:STDOUT: %pattern_type.66e: type = pattern_type %ptr.128 [concrete]
// CHECK:STDOUT: %ptr.143: type = ptr_type %i32 [concrete]
// CHECK:STDOUT: %.793: Core.Form = init_form %ptr.143 [concrete]
// CHECK:STDOUT: %pattern_type.663: type = pattern_type %ptr.143 [concrete]
// CHECK:STDOUT: %Access.type: type = fn_type @Access [concrete]
// CHECK:STDOUT: %Access: %Access.type = struct_value () [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %T.67d: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.type.b03: type = fn_type @ptr.as.Copy.impl.Op, @ptr.as.Copy.impl(%T.67d) [symbolic]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.aed: %ptr.as.Copy.impl.Op.type.b03 = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.45b: <witness> = impl_witness imports.%Copy.impl_witness_table.760, @ptr.as.Copy.impl(%i32) [concrete]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.type.eac: type = fn_type @ptr.as.Copy.impl.Op, @ptr.as.Copy.impl(%i32) [concrete]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.6e2: %ptr.as.Copy.impl.Op.type.eac = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %ptr.143, (%Copy.impl_witness.45b) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.72c: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet) [concrete]
// CHECK:STDOUT: %.948: type = fn_type_with_self_type %Copy.WithSelf.Op.type.72c, %Copy.facet [concrete]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %ptr.as.Copy.impl.Op.6e2, @ptr.as.Copy.impl.Op(%i32) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// 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.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
// CHECK:STDOUT: %Core.import_ref.13c: @ptr.as.Copy.impl.%ptr.as.Copy.impl.Op.type (%ptr.as.Copy.impl.Op.type.b03) = import_ref Core//prelude/parts/copy, loc{{\d+_\d+}}, loaded [symbolic = @ptr.as.Copy.impl.%ptr.as.Copy.impl.Op (constants.%ptr.as.Copy.impl.Op.aed)]
// CHECK:STDOUT: %Copy.impl_witness_table.760 = impl_witness_table (%Core.import_ref.13c), @ptr.as.Copy.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Base = %Base.decl
// CHECK:STDOUT: .Derived = %Derived.decl
// CHECK:STDOUT: .Access = %Access.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Base.decl: type = class_decl @Base [concrete = constants.%Base] {} {}
// CHECK:STDOUT: %Derived.decl: type = class_decl @Derived [concrete = constants.%Derived] {} {}
// CHECK:STDOUT: %Access.decl: %Access.type = fn_decl @Access [concrete = constants.%Access] {
// CHECK:STDOUT: %p.param_patt: %pattern_type.66e = value_param_pattern [concrete]
// CHECK:STDOUT: %p.patt: %pattern_type.66e = at_binding_pattern p, %p.param_patt [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.663 = out_param_pattern [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.663 = return_slot_pattern %return.param_patt, %ptr.loc28_30 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %ptr.loc28_30: type = ptr_type %i32 [concrete = constants.%ptr.143]
// CHECK:STDOUT: %.loc28_30: Core.Form = init_form %ptr.loc28_30 [concrete = constants.%.793]
// CHECK:STDOUT: %p.param: %ptr.128 = value_param call_param0
// CHECK:STDOUT: %.loc28_21: type = splice_block %ptr.loc28_21 [concrete = constants.%ptr.128] {
// CHECK:STDOUT: %Derived.ref: type = name_ref Derived, file.%Derived.decl [concrete = constants.%Derived]
// CHECK:STDOUT: %ptr.loc28_21: type = ptr_type %Derived.ref [concrete = constants.%ptr.128]
// CHECK:STDOUT: }
// CHECK:STDOUT: %p: %ptr.128 = value_binding p, %p.param
// CHECK:STDOUT: %return.param: ref %ptr.143 = out_param call_param1
// CHECK:STDOUT: %return: ref %ptr.143 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Base {
// CHECK:STDOUT: %.loc16: %Base.elem = field_decl a, element0 [concrete]
// CHECK:STDOUT: %.loc17: %Base.elem = field_decl b, element1 [concrete]
// CHECK:STDOUT: %.loc18: %Base.elem = field_decl c, element2 [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%struct_type.a.b.c [concrete = constants.%complete_type.7bc]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Base
// CHECK:STDOUT: .a = %.loc16
// CHECK:STDOUT: .b = %.loc17
// CHECK:STDOUT: .c = %.loc18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Derived {
// CHECK:STDOUT: %Base.ref: type = name_ref Base, file.%Base.decl [concrete = constants.%Base]
// CHECK:STDOUT: %.loc22: %Derived.elem.de2 = base_decl %Base.ref, element0 [concrete]
// CHECK:STDOUT: %.loc24: %Derived.elem.6ba = field_decl d, element1 [concrete]
// CHECK:STDOUT: %.loc25: %Derived.elem.6ba = field_decl e, element2 [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%struct_type.base.d.e.768 [concrete = constants.%complete_type.a4e]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Derived
// CHECK:STDOUT: .Base = <poisoned>
// CHECK:STDOUT: .base = %.loc22
// CHECK:STDOUT: .d = %.loc24
// CHECK:STDOUT: .e = %.loc25
// CHECK:STDOUT: .c = <poisoned>
// CHECK:STDOUT: extend %Base.ref
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Access(%p.param: %ptr.128) -> out %return.param: %ptr.143 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %p.ref: %ptr.128 = name_ref p, %p
// CHECK:STDOUT: %.loc29_12: ref %Derived = deref %p.ref
// CHECK:STDOUT: %c.ref: %Base.elem = name_ref c, @Base.%.loc18 [concrete = @Base.%.loc18]
// CHECK:STDOUT: %.loc29_15.1: ref %Base = class_element_access %.loc29_12, element0
// CHECK:STDOUT: %.loc29_15.2: ref %Base = converted %.loc29_12, %.loc29_15.1
// CHECK:STDOUT: %.loc29_15.3: ref %i32 = class_element_access %.loc29_15.2, element2
// CHECK:STDOUT: %addr: %ptr.143 = addr_of %.loc29_15.3
// CHECK:STDOUT: %impl.elem0: %.948 = impl_witness_access constants.%Copy.impl_witness.45b, element0 [concrete = constants.%ptr.as.Copy.impl.Op.6e2]
// CHECK:STDOUT: %bound_method.loc29_10.1: <bound method> = bound_method %addr, %impl.elem0
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @ptr.as.Copy.impl.Op(constants.%i32) [concrete = constants.%ptr.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc29_10.2: <bound method> = bound_method %addr, %specific_fn
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.call: init %ptr.143 = call %bound_method.loc29_10.2(%addr)
// CHECK:STDOUT: return %ptr.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
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