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carbon-lang/toolchain/check/testdata/interface/fail_generic_redeclaration.carbon
T
Richard Smith cefa0397bb More fixes to package and library fingerprinting. (#7297) 
Fix import logic to make all imported packages be children of the
`NameScopeId::Package` scope. Previously, indirectly-imported packages
would end up as children of their importing package's scope, which
resulted in them not being treated as packages at all, and in particular
not being fingerprinted as packages.

Fixing that caused a failure in the fingerprinting logic as we started
to encounter packages with no correspoding import scopes. Instead of
looking for import scopes, use a simpler mechanism to map packages to
their package names, and clean up.

Unfortunately the latter change churns all the fingerprints again :(
Hopefully this is the last time for a while.
2026-06-04 17:41:46 +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_generic_redeclaration.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interface/fail_generic_redeclaration.carbon
interface NotGeneric;
// CHECK:STDERR: fail_generic_redeclaration.carbon:[[@LINE+7]]:1: error: redeclaration differs because of parameter list [RedeclParamListDiffers]
// CHECK:STDERR: interface NotGeneric(T:! type) {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_generic_redeclaration.carbon:[[@LINE-4]]:1: note: previously declared without parameter list [RedeclParamListPrevious]
// CHECK:STDERR: interface NotGeneric;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
interface NotGeneric(T:! type) {}
interface Generic(T:! type);
// CHECK:STDERR: fail_generic_redeclaration.carbon:[[@LINE+7]]:1: error: redeclaration differs because of missing parameter list [RedeclParamListDiffers]
// CHECK:STDERR: interface Generic {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_generic_redeclaration.carbon:[[@LINE-4]]:1: note: previously declared with parameter list [RedeclParamListPrevious]
// CHECK:STDERR: interface Generic(T:! type);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
interface Generic {}
interface DifferentParams(T:! type);
// CHECK:STDERR: fail_generic_redeclaration.carbon:[[@LINE+7]]:27: error: type `<pattern for ()>` of parameter 1 in redeclaration differs from previous parameter type `<pattern for type>` [RedeclParamDiffersType]
// CHECK:STDERR: interface DifferentParams(T:! ()) {}
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR: fail_generic_redeclaration.carbon:[[@LINE-4]]:27: note: previous declaration's corresponding parameter here [RedeclParamPrevious]
// CHECK:STDERR: interface DifferentParams(T:! type);
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
interface DifferentParams(T:! ()) {}
// CHECK:STDOUT: --- fail_generic_redeclaration.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %NotGeneric.type.fd5: type = facet_type <@NotGeneric.loc15> [concrete]
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %pattern_type.98f: type = pattern_type type [concrete]
// CHECK:STDOUT: %T.67d: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %NotGeneric.type.fec: type = generic_interface_type @NotGeneric.loc23 [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %NotGeneric.generic: %NotGeneric.type.fec = struct_value () [concrete]
// CHECK:STDOUT: %NotGeneric.type.e75: type = facet_type <@NotGeneric.loc23, @NotGeneric.loc23(%T.67d)> [symbolic]
// CHECK:STDOUT: %Self.b8f: %NotGeneric.type.e75 = symbolic_binding Self, 1 [symbolic]
// CHECK:STDOUT: %Generic.type.30d: type = generic_interface_type @Generic.loc25 [concrete]
// CHECK:STDOUT: %Generic.generic: %Generic.type.30d = struct_value () [concrete]
// CHECK:STDOUT: %Generic.type.b2d: type = facet_type <@Generic.loc33> [concrete]
// CHECK:STDOUT: %Self.c53: %Generic.type.b2d = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT: %DifferentParams.type.998819.1: type = generic_interface_type @DifferentParams.loc35 [concrete]
// CHECK:STDOUT: %DifferentParams.generic.54c122.1: %DifferentParams.type.998819.1 = struct_value () [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: %T.d5f: %empty_tuple.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %DifferentParams.type.998819.2: type = generic_interface_type @DifferentParams.loc43 [concrete]
// CHECK:STDOUT: %DifferentParams.generic.54c122.2: %DifferentParams.type.998819.2 = struct_value () [concrete]
// CHECK:STDOUT: %DifferentParams.type.7d4: type = facet_type <@DifferentParams.loc43, @DifferentParams.loc43(%T.d5f)> [symbolic]
// CHECK:STDOUT: %Self.a37: %DifferentParams.type.7d4 = symbolic_binding Self, 1 [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .NotGeneric = %NotGeneric.decl.loc15
// CHECK:STDOUT: .Generic = %Generic.decl.loc25
// CHECK:STDOUT: .DifferentParams = %DifferentParams.decl.loc35
// CHECK:STDOUT: }
// CHECK:STDOUT: %NotGeneric.decl.loc15: type = interface_decl @NotGeneric.loc15 [concrete = constants.%NotGeneric.type.fd5] {} {}
// CHECK:STDOUT: %NotGeneric.decl.loc23: %NotGeneric.type.fec = interface_decl @NotGeneric.loc23 [concrete = constants.%NotGeneric.generic] {
// CHECK:STDOUT: %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc23_26.1: type = splice_block %.loc23_26.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc23_26.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc23_23.2: type = symbolic_binding T, 0 [symbolic = %T.loc23_23.1 (constants.%T.67d)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Generic.decl.loc25: %Generic.type.30d = interface_decl @Generic.loc25 [concrete = constants.%Generic.generic] {
// CHECK:STDOUT: %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc25_23.1: type = splice_block %.loc25_23.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc25_23.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc25_20.2: type = symbolic_binding T, 0 [symbolic = %T.loc25_20.1 (constants.%T.67d)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Generic.decl.loc33: type = interface_decl @Generic.loc33 [concrete = constants.%Generic.type.b2d] {} {}
// CHECK:STDOUT: %DifferentParams.decl.loc35: %DifferentParams.type.998819.1 = interface_decl @DifferentParams.loc35 [concrete = constants.%DifferentParams.generic.54c122.1] {
// CHECK:STDOUT: %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc35_31.1: type = splice_block %.loc35_31.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc35_31.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc35_28.2: type = symbolic_binding T, 0 [symbolic = %T.loc35_28.1 (constants.%T.67d)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %DifferentParams.decl.loc43: %DifferentParams.type.998819.2 = interface_decl @DifferentParams.loc43 [concrete = constants.%DifferentParams.generic.54c122.2] {
// CHECK:STDOUT: %T.patt: %pattern_type.cb1 = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc43_32.1: type = splice_block %.loc43_32.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc43_32.2: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %.loc43_32.3: type = converted %.loc43_32.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc43_28.2: %empty_tuple.type = symbolic_binding T, 0 [symbolic = %T.loc43_28.1 (constants.%T.d5f)]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @NotGeneric.loc15;
// CHECK:STDOUT:
// CHECK:STDOUT: generic interface @NotGeneric.loc23(%T.loc23_23.2: type) {
// CHECK:STDOUT: %T.loc23_23.1: type = symbolic_binding T, 0 [symbolic = %T.loc23_23.1 (constants.%T.67d)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %NotGeneric.type: type = facet_type <@NotGeneric.loc23, @NotGeneric.loc23(%T.loc23_23.1)> [symbolic = %NotGeneric.type (constants.%NotGeneric.type.e75)]
// CHECK:STDOUT: %Self.loc23_32.2: @NotGeneric.loc23.%NotGeneric.type (%NotGeneric.type.e75) = symbolic_binding Self, 1 [symbolic = %Self.loc23_32.2 (constants.%Self.b8f)]
// CHECK:STDOUT:
// CHECK:STDOUT: interface {
// CHECK:STDOUT: %Self.loc23_32.1: @NotGeneric.loc23.%NotGeneric.type (%NotGeneric.type.e75) = symbolic_binding Self, 1 [symbolic = %Self.loc23_32.2 (constants.%Self.b8f)]
// CHECK:STDOUT: %NotGeneric.WithSelf.decl = interface_with_self_decl @NotGeneric.loc23 [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self.loc23_32.1
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic interface @Generic.loc25(%T.loc25_20.2: type) {
// CHECK:STDOUT: %T.loc25_20.1: type = symbolic_binding T, 0 [symbolic = %T.loc25_20.1 (constants.%T.67d)]
// CHECK:STDOUT:
// CHECK:STDOUT: interface;
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Generic.loc33 {
// CHECK:STDOUT: %Self: %Generic.type.b2d = symbolic_binding Self, 0 [symbolic = constants.%Self.c53]
// CHECK:STDOUT: %Generic.WithSelf.decl = interface_with_self_decl @Generic.loc33 [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic interface @DifferentParams.loc35(%T.loc35_28.2: type) {
// CHECK:STDOUT: %T.loc35_28.1: type = symbolic_binding T, 0 [symbolic = %T.loc35_28.1 (constants.%T.67d)]
// CHECK:STDOUT:
// CHECK:STDOUT: interface;
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic interface @DifferentParams.loc43(%T.loc43_28.2: %empty_tuple.type) {
// CHECK:STDOUT: %T.loc43_28.1: %empty_tuple.type = symbolic_binding T, 0 [symbolic = %T.loc43_28.1 (constants.%T.d5f)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %DifferentParams.type: type = facet_type <@DifferentParams.loc43, @DifferentParams.loc43(%T.loc43_28.1)> [symbolic = %DifferentParams.type (constants.%DifferentParams.type.7d4)]
// CHECK:STDOUT: %Self.loc43_35.2: @DifferentParams.loc43.%DifferentParams.type (%DifferentParams.type.7d4) = symbolic_binding Self, 1 [symbolic = %Self.loc43_35.2 (constants.%Self.a37)]
// CHECK:STDOUT:
// CHECK:STDOUT: interface {
// CHECK:STDOUT: %Self.loc43_35.1: @DifferentParams.loc43.%DifferentParams.type (%DifferentParams.type.7d4) = symbolic_binding Self, 1 [symbolic = %Self.loc43_35.2 (constants.%Self.a37)]
// CHECK:STDOUT: %DifferentParams.WithSelf.decl = interface_with_self_decl @DifferentParams.loc43 [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self.loc43_35.1
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @NotGeneric.loc23(constants.%T.67d) {
// CHECK:STDOUT: %T.loc23_23.1 => constants.%T.67d
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @NotGeneric.WithSelf(constants.%T.67d, constants.%Self.b8f) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Generic.loc25(constants.%T.67d) {
// CHECK:STDOUT: %T.loc25_20.1 => constants.%T.67d
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Generic.WithSelf(constants.%Self.c53) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @DifferentParams.loc35(constants.%T.67d) {
// CHECK:STDOUT: %T.loc35_28.1 => constants.%T.67d
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @DifferentParams.loc43(constants.%T.d5f) {
// CHECK:STDOUT: %T.loc43_28.1 => constants.%T.d5f
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @DifferentParams.WithSelf(constants.%T.d5f, constants.%Self.a37) {}
// CHECK:STDOUT:
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