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carbon-lang/toolchain/check/testdata/array/import.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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/array/import.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/array/import.carbon
// --- library.carbon
library "[[@TEST_NAME]]";
fn F() -> array(i32, 42);
// --- user.carbon
import library "library";
fn G(n: i32) -> i32 {
//@dump-sem-ir-begin
return F()[n];
//@dump-sem-ir-end
}
// --- symbolic_decl.carbon
library "[[@TEST_NAME]]";
interface I {
let value:! array(i32, 1);
}
class C {}
impl C as I where .value = (1,) {}
// --- import_symbolic_decl.carbon
library "[[@TEST_NAME]]";
import library "symbolic_decl";
fn F() -> i32 {
//@dump-sem-ir-begin
let a: array(i32, 1) = (C as I).value;
//@dump-sem-ir-end
return a[0];
}
// CHECK:STDOUT: --- user.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %i32.builtin: type = int_type signed, %int_32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %int_42: Core.IntLiteral = int_value 42 [concrete]
// CHECK:STDOUT: %array_type: type = array_type %int_42, %i32 [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: %Destroy.Op.type.af7ec0.3: type = fn_type @Destroy.Op.loc6_12.3 [concrete]
// CHECK:STDOUT: %Destroy.Op.1dc86d.3: %Destroy.Op.type.af7ec0.3 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.F: %F.type = import_ref Main//library, F, loaded [concrete = constants.%F]
// 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: fn @G(%n.param: %i32) -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, imports.%Main.F [concrete = constants.%F]
// CHECK:STDOUT: %.loc6_12.1: ref %array_type = temporary_storage
// CHECK:STDOUT: %F.call: init %array_type to %.loc6_12.1 = call %F.ref()
// CHECK:STDOUT: %n.ref: %i32 = name_ref n, %n
// CHECK:STDOUT: %.loc6_12.2: ref %array_type = temporary %.loc6_12.1, %F.call
// CHECK:STDOUT: %.loc6_15.1: ref %i32 = array_index %.loc6_12.2, %n.ref
// CHECK:STDOUT: %.loc6_15.2: %i32 = acquire_value %.loc6_15.1
// CHECK:STDOUT: %impl.elem0: %.a5f = impl_witness_access constants.%Copy.impl_witness.32d, element0 [concrete = constants.%Int.as.Copy.impl.Op.c4a]
// CHECK:STDOUT: %bound_method.loc6_15.1: <bound method> = bound_method %.loc6_15.2, %impl.elem0
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc6_15.2: <bound method> = bound_method %.loc6_15.2, %specific_fn
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc6_15.2(%.loc6_15.2)
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %.loc6_12.2, constants.%Destroy.Op.1dc86d.3
// CHECK:STDOUT: %Destroy.Op.call: init %empty_tuple.type = call %Destroy.Op.bound(%.loc6_12.2)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc6_12.1(%self.param: ref %i32.builtin) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc6_12.2(%self.param: ref %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc6_12.3(%self.param: ref %array_type) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- import_symbolic_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %array_type: type = array_type %int_1.5b8, %i32 [concrete]
// CHECK:STDOUT: %pattern_type.6f3: type = pattern_type %array_type [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT: %int_1.d5e: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %array: %array_type = tuple_value (%int_1.d5e) [concrete]
// CHECK:STDOUT: %I.impl_witness: <witness> = impl_witness imports.%I.impl_witness_table [concrete]
// CHECK:STDOUT: %I.facet: %I.type = facet_value %C, (%I.impl_witness) [concrete]
// CHECK:STDOUT: %I.assoc_type: type = assoc_entity_type @I [concrete]
// CHECK:STDOUT: %assoc0.e1c: %I.assoc_type = assoc_entity element0, imports.%Main.import_ref.135 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.I: type = import_ref Main//symbolic_decl, I, loaded [concrete = constants.%I.type]
// CHECK:STDOUT: %Main.C: type = import_ref Main//symbolic_decl, C, loaded [concrete = constants.%C]
// CHECK:STDOUT: %Main.import_ref.f94: %I.assoc_type = import_ref Main//symbolic_decl, loc5_12, loaded [concrete = constants.%assoc0.e1c]
// CHECK:STDOUT: %Main.import_ref.de0: %array_type = import_ref Main//symbolic_decl, loc10_33, loaded [concrete = constants.%array]
// CHECK:STDOUT: %I.impl_witness_table = impl_witness_table (%Main.import_ref.de0), @C.as.I.impl [concrete]
// CHECK:STDOUT: %Main.import_ref.135: %array_type = import_ref Main//symbolic_decl, loc5_12, loaded [concrete = %value]
// CHECK:STDOUT: %value: %array_type = assoc_const_decl @value [concrete] {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: %pattern_type.6f3 = value_binding_pattern a [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.ref: type = name_ref C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT: %I.ref: type = name_ref I, imports.%Main.I [concrete = constants.%I.type]
// CHECK:STDOUT: %I.facet: %I.type = facet_value %C.ref, (constants.%I.impl_witness) [concrete = constants.%I.facet]
// CHECK:STDOUT: %.loc7_29: %I.type = converted %C.ref, %I.facet [concrete = constants.%I.facet]
// CHECK:STDOUT: %as_type: type = facet_access_type %.loc7_29 [concrete = constants.%C]
// CHECK:STDOUT: %.loc7_34: type = converted %.loc7_29, %as_type [concrete = constants.%C]
// CHECK:STDOUT: %value.ref: %I.assoc_type = name_ref value, imports.%Main.import_ref.f94 [concrete = constants.%assoc0.e1c]
// CHECK:STDOUT: %impl.elem0.loc7: %array_type = impl_witness_access constants.%I.impl_witness, element0 [concrete = constants.%array]
// CHECK:STDOUT: %.loc7_22: type = splice_block %array_type [concrete = constants.%array_type] {
// CHECK:STDOUT: %i32.loc7: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %array_type: type = array_type %int_1, %i32.loc7 [concrete = constants.%array_type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: %array_type = value_binding a, %impl.elem0.loc7
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
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