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carbon-lang/toolchain/check/testdata/interface/fail_assoc_fn_invalid_use.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/none.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/interface/fail_assoc_fn_invalid_use.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interface/fail_assoc_fn_invalid_use.carbon
// --- fail_member_access.carbon
library "[[@TEST_NAME]]";
interface I {
fn F[self: Self]();
}
fn Use(T:! I) {
// CHECK:STDERR: fail_member_access.carbon:[[@LINE+4]]:3: error: type `<type of F in T>` does not support qualified expressions [QualifiedExprUnsupported]
// CHECK:STDERR: T.F.member;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
T.F.member;
}
// CHECK:STDOUT: --- fail_member_access.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT: %Self: %I.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT: %Self.as_type: type = facet_access_type %Self [symbolic]
// CHECK:STDOUT: %pattern_type.90a: type = pattern_type %Self.as_type [symbolic]
// CHECK:STDOUT: %I.WithSelf.F.type.bea: type = fn_type @I.WithSelf.F, @I.WithSelf(%Self) [symbolic]
// CHECK:STDOUT: %I.WithSelf.F.79e: %I.WithSelf.F.type.bea = struct_value () [symbolic]
// CHECK:STDOUT: %I.assoc_type: type = assoc_entity_type @I [concrete]
// CHECK:STDOUT: %assoc0: %I.assoc_type = assoc_entity element0, @I.WithSelf.%I.WithSelf.F.decl [concrete]
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %pattern_type.1e1: type = pattern_type %I.type [concrete]
// CHECK:STDOUT: %T: %I.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %Use.type: type = fn_type @Use [concrete]
// CHECK:STDOUT: %Use: %Use.type = struct_value () [concrete]
// CHECK:STDOUT: %I.WithSelf.F.type.1d2: type = fn_type @I.WithSelf.F, @I.WithSelf(%T) [symbolic]
// CHECK:STDOUT: %I.WithSelf.F.805: %I.WithSelf.F.type.1d2 = struct_value () [symbolic]
// CHECK:STDOUT: %T.as_type: type = facet_access_type %T [symbolic]
// CHECK:STDOUT: %I.lookup_impl_witness: <witness> = lookup_impl_witness %T, @I [symbolic]
// CHECK:STDOUT: %.a37: type = fn_type_with_self_type %I.WithSelf.F.type.1d2, %T [symbolic]
// CHECK:STDOUT: %impl.elem0: %.a37 = impl_witness_access %I.lookup_impl_witness, element0 [symbolic]
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %.a37 [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .I = %I.decl
// CHECK:STDOUT: .Use = %Use.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
// CHECK:STDOUT: %Use.decl: %Use.type = fn_decl @Use [concrete = constants.%Use] {
// CHECK:STDOUT: %T.patt: %pattern_type.1e1 = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc8: type = splice_block %I.ref [concrete = constants.%I.type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc8_9.2: %I.type = symbolic_binding T, 0 [symbolic = %T.loc8_9.1 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT: %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT: %I.WithSelf.decl = interface_with_self_decl @I [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !with Self:
// CHECK:STDOUT: %I.WithSelf.F.decl: @I.WithSelf.%I.WithSelf.F.type (%I.WithSelf.F.type.bea) = fn_decl @I.WithSelf.F [symbolic = @I.WithSelf.%I.WithSelf.F (constants.%I.WithSelf.F.79e)] {
// CHECK:STDOUT: %self.param_patt: @I.WithSelf.F.%pattern_type (%pattern_type.90a) = value_param_pattern [concrete]
// CHECK:STDOUT: %self.patt: @I.WithSelf.F.%pattern_type (%pattern_type.90a) = at_binding_pattern self, %self.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: @I.WithSelf.F.%Self.as_type.loc5_14.1 (%Self.as_type) = value_param call_param0
// CHECK:STDOUT: %.loc5_14.1: type = splice_block %.loc5_14.2 [symbolic = %Self.as_type.loc5_14.1 (constants.%Self.as_type)] {
// CHECK:STDOUT: %Self.ref: %I.type = name_ref Self, @I.%Self [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %Self.as_type.loc5_14.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc5_14.1 (constants.%Self.as_type)]
// CHECK:STDOUT: %.loc5_14.2: type = converted %Self.ref, %Self.as_type.loc5_14.2 [symbolic = %Self.as_type.loc5_14.1 (constants.%Self.as_type)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %self: @I.WithSelf.F.%Self.as_type.loc5_14.1 (%Self.as_type) = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %assoc0: %I.assoc_type = assoc_entity element0, %I.WithSelf.F.decl [concrete = constants.%assoc0]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: .F = @I.WithSelf.%assoc0
// CHECK:STDOUT: witness = (@I.WithSelf.%I.WithSelf.F.decl)
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @I.WithSelf.F(@I.%Self: %I.type) {
// CHECK:STDOUT: %Self: %I.type = symbolic_binding Self, 0 [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %Self.as_type.loc5_14.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc5_14.1 (constants.%Self.as_type)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %Self.as_type.loc5_14.1 [symbolic = %pattern_type (constants.%pattern_type.90a)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%self.param: @I.WithSelf.F.%Self.as_type.loc5_14.1 (%Self.as_type));
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Use(%T.loc8_9.2: %I.type) {
// CHECK:STDOUT: %T.loc8_9.1: %I.type = symbolic_binding T, 0 [symbolic = %T.loc8_9.1 (constants.%T)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %T.as_type.loc13_4.2: type = facet_access_type %T.loc8_9.1 [symbolic = %T.as_type.loc13_4.2 (constants.%T.as_type)]
// CHECK:STDOUT: %I.WithSelf.F.type: type = fn_type @I.WithSelf.F, @I.WithSelf(%T.loc8_9.1) [symbolic = %I.WithSelf.F.type (constants.%I.WithSelf.F.type.1d2)]
// CHECK:STDOUT: %.loc13_4.2: type = fn_type_with_self_type %I.WithSelf.F.type, %T.loc8_9.1 [symbolic = %.loc13_4.2 (constants.%.a37)]
// CHECK:STDOUT: %I.lookup_impl_witness: <witness> = lookup_impl_witness %T.loc8_9.1, @I [symbolic = %I.lookup_impl_witness (constants.%I.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc13_4.2: @Use.%.loc13_4.2 (%.a37) = impl_witness_access %I.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc13_4.2 (constants.%impl.elem0)]
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %.loc13_4.2 [symbolic = %require_complete (constants.%require_complete)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %T.ref: %I.type = name_ref T, %T.loc8_9.2 [symbolic = %T.loc8_9.1 (constants.%T)]
// CHECK:STDOUT: %T.as_type.loc13_4.1: type = facet_access_type %T.ref [symbolic = %T.as_type.loc13_4.2 (constants.%T.as_type)]
// CHECK:STDOUT: %.loc13_4.1: type = converted %T.ref, %T.as_type.loc13_4.1 [symbolic = %T.as_type.loc13_4.2 (constants.%T.as_type)]
// CHECK:STDOUT: %F.ref: %I.assoc_type = name_ref F, @I.WithSelf.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %impl.elem0.loc13_4.1: @Use.%.loc13_4.2 (%.a37) = impl_witness_access constants.%I.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc13_4.2 (constants.%impl.elem0)]
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @I.WithSelf(constants.%Self) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %I.WithSelf.F.type => constants.%I.WithSelf.F.type.bea
// CHECK:STDOUT: %I.WithSelf.F => constants.%I.WithSelf.F.79e
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @I.WithSelf.F(constants.%Self) {
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %Self.as_type.loc5_14.1 => constants.%Self.as_type
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.90a
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Use(constants.%T) {
// CHECK:STDOUT: %T.loc8_9.1 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @I.WithSelf(constants.%T) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Self => constants.%T
// CHECK:STDOUT: %I.WithSelf.F.type => constants.%I.WithSelf.F.type.1d2
// CHECK:STDOUT: %I.WithSelf.F => constants.%I.WithSelf.F.805
// CHECK:STDOUT: }
// CHECK:STDOUT:
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