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carbon-lang/toolchain/check/testdata/for/basic.carbon
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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/for.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/for/basic.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/for/basic.carbon
// --- fail_not_range.carbon
library "[[@TEST_NAME]]";
fn Run() {
// TODO: These diagnostics could be better. If nothing else, we should only diagnose once.
// CHECK:STDERR: fail_not_range.carbon:[[@LINE+8]]:7: error: cannot access member of interface `Core.Iterate` in type `{}` that does not implement that interface [MissingImplInMemberAccess]
// CHECK:STDERR: for (unused c: {} in {}) {
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_not_range.carbon:[[@LINE+4]]:7: error: cannot access member of interface `Core.Iterate` in type `{}` that does not implement that interface [MissingImplInMemberAccess]
// CHECK:STDERR: for (unused c: {} in {}) {
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
for (unused c: {} in {}) {
}
}
// --- trivial.carbon
library "[[@TEST_NAME]]";
class TrivialRange {
impl as Core.Iterate where .CursorType = () and .ElementType = () {
fn NewCursor[unused self: Self]() {}
fn Next[unused self: Self](unused cursor: ()*) -> Core.Optional(()) {
return Core.Optional(()).None();
}
}
}
fn Body();
fn AfterLoop();
fn Run() {
//@dump-sem-ir-begin
for (_: () in {} as TrivialRange) {
Body();
}
AfterLoop();
//@dump-sem-ir-end
}
// CHECK:STDOUT: --- trivial.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %TrivialRange: type = class_type @TrivialRange [concrete]
// CHECK:STDOUT: %Iterate.type: type = facet_type <@Iterate> [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %T.f84: %Copy.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %Optional.Get.type.e1b: type = fn_type @Optional.Get, @Optional(%T.f84) [symbolic]
// CHECK:STDOUT: %Optional.Get.20c: %Optional.Get.type.e1b = struct_value () [symbolic]
// CHECK:STDOUT: %Optional.HasValue.type.224: type = fn_type @Optional.HasValue, @Optional(%T.f84) [symbolic]
// CHECK:STDOUT: %Optional.HasValue.c4f: %Optional.HasValue.type.224 = struct_value () [symbolic]
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
// CHECK:STDOUT: %Copy.impl_witness.77e: <witness> = impl_witness imports.%Copy.impl_witness_table.938 [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %empty_tuple.type, (%Copy.impl_witness.77e) [concrete]
// CHECK:STDOUT: %Iterate.impl_witness: <witness> = impl_witness @TrivialRange.as.Iterate.impl.%Iterate.impl_witness_table [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.type.de32c1.1: type = fn_type @TrivialRange.as.Iterate.impl.NewCursor.loc6_39.1 [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.93de00.1: %TrivialRange.as.Iterate.impl.NewCursor.type.de32c1.1 = struct_value () [concrete]
// CHECK:STDOUT: %ptr.843: type = ptr_type %empty_tuple.type [concrete]
// CHECK:STDOUT: %Optional.21a: type = class_type @Optional, @Optional(%Copy.facet) [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next.type: type = fn_type @TrivialRange.as.Iterate.impl.Next [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next: %TrivialRange.as.Iterate.impl.Next.type = struct_value () [concrete]
// CHECK:STDOUT: %Iterate.facet: %Iterate.type = facet_value %TrivialRange, (%Iterate.impl_witness) [concrete]
// CHECK:STDOUT: %Iterate.WithSelf.NewCursor.type.b66: type = fn_type @Iterate.WithSelf.NewCursor, @Iterate.WithSelf(%Iterate.facet) [concrete]
// CHECK:STDOUT: %Iterate.WithSelf.Next.type.4f6: type = fn_type @Iterate.WithSelf.Next, @Iterate.WithSelf(%Iterate.facet) [concrete]
// CHECK:STDOUT: %pattern_type.cb1: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.type.de32c1.2: type = fn_type @TrivialRange.as.Iterate.impl.NewCursor.loc6_39.2 [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.93de00.2: %TrivialRange.as.Iterate.impl.NewCursor.type.de32c1.2 = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %Optional.HasValue.type.650: type = fn_type @Optional.HasValue, @Optional(%Copy.facet) [concrete]
// CHECK:STDOUT: %Optional.HasValue.d37: %Optional.HasValue.type.650 = struct_value () [concrete]
// CHECK:STDOUT: %Optional.Get.type.5f1: type = fn_type @Optional.Get, @Optional(%Copy.facet) [concrete]
// CHECK:STDOUT: %Optional.Get.2aa: %Optional.Get.type.5f1 = struct_value () [concrete]
// CHECK:STDOUT: %struct_type.has_value.value.da2: type = struct_type {.has_value: bool, .value: %empty_tuple.type} [concrete]
// CHECK:STDOUT: %Body.type: type = fn_type @Body [concrete]
// CHECK:STDOUT: %Body: %Body.type = struct_value () [concrete]
// CHECK:STDOUT: %AfterLoop.type: type = fn_type @AfterLoop [concrete]
// CHECK:STDOUT: %AfterLoop: %AfterLoop.type = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct: %empty_struct_type = struct_value () [concrete]
// CHECK:STDOUT: %TrivialRange.val: %TrivialRange = struct_value () [concrete]
// CHECK:STDOUT: %.50e: ref %TrivialRange = temporary invalid, %TrivialRange.val [concrete]
// CHECK:STDOUT: %.46f: type = fn_type_with_self_type %Iterate.WithSelf.NewCursor.type.b66, %Iterate.facet [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.bound.464: <bound method> = bound_method %.50e, %TrivialRange.as.Iterate.impl.NewCursor.93de00.2 [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.bound.410: <bound method> = bound_method %TrivialRange.val, %TrivialRange.as.Iterate.impl.NewCursor.93de00.1 [concrete]
// CHECK:STDOUT: %.eb2: type = fn_type_with_self_type %Iterate.WithSelf.Next.type.4f6, %Iterate.facet [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next.bound: <bound method> = bound_method %.50e, %TrivialRange.as.Iterate.impl.Next [concrete]
// CHECK:STDOUT: %Optional.HasValue.specific_fn: <specific function> = specific_function %Optional.HasValue.d37, @Optional.HasValue(%Copy.facet) [concrete]
// CHECK:STDOUT: %Optional.Get.specific_fn: <specific function> = specific_function %Optional.Get.2aa, @Optional.Get(%Copy.facet) [concrete]
// CHECK:STDOUT: %Destroy.Op.type.1d8f74.1: type = fn_type @Destroy.Op.loc18_35.1 [concrete]
// CHECK:STDOUT: %Destroy.Op.1a2547.1: %Destroy.Op.type.1d8f74.1 = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.Op.type.1d8f74.4: type = fn_type @Destroy.Op.loc18_35.4 [concrete]
// CHECK:STDOUT: %Destroy.Op.1a2547.4: %Destroy.Op.type.1d8f74.4 = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.Op.type.1d8f74.6: type = fn_type @Destroy.Op.loc18_20.2 [concrete]
// CHECK:STDOUT: %Destroy.Op.1a2547.6: %Destroy.Op.type.1d8f74.6 = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %.50e, %Destroy.Op.1a2547.6 [concrete]
// CHECK:STDOUT: %empty_tuple.type.as.Copy.impl.Op.type: type = fn_type @empty_tuple.type.as.Copy.impl.Op [concrete]
// CHECK:STDOUT: %empty_tuple.type.as.Copy.impl.Op: %empty_tuple.type.as.Copy.impl.Op.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core.import_ref.1db: @Optional.%Optional.HasValue.type (%Optional.HasValue.type.224) = import_ref Core//prelude/parts/iterate, inst{{[0-9A-F]+}} [indirect], loaded [symbolic = @Optional.%Optional.HasValue (constants.%Optional.HasValue.c4f)]
// CHECK:STDOUT: %Core.import_ref.73b: @Optional.%Optional.Get.type (%Optional.Get.type.e1b) = import_ref Core//prelude/parts/iterate, inst{{[0-9A-F]+}} [indirect], loaded [symbolic = @Optional.%Optional.Get (constants.%Optional.Get.20c)]
// CHECK:STDOUT: %Core.import_ref.9c3: %empty_tuple.type.as.Copy.impl.Op.type = import_ref Core//prelude/parts/copy, loc{{\d+_\d+}}, loaded [concrete = constants.%empty_tuple.type.as.Copy.impl.Op]
// CHECK:STDOUT: %Copy.impl_witness_table.938 = impl_witness_table (%Core.import_ref.9c3), @empty_tuple.type.as.Copy.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %_.patt: %pattern_type.cb1 = value_binding_pattern _ [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc18_18.1: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
// CHECK:STDOUT: %TrivialRange.ref: type = name_ref TrivialRange, file.%TrivialRange.decl [concrete = constants.%TrivialRange]
// CHECK:STDOUT: %.loc18_18.2: ref %TrivialRange = temporary_storage
// CHECK:STDOUT: %.loc18_18.3: init %TrivialRange to %.loc18_18.2 = class_init () [concrete = constants.%TrivialRange.val]
// CHECK:STDOUT: %.loc18_20.1: init %TrivialRange = converted %.loc18_18.1, %.loc18_18.3 [concrete = constants.%TrivialRange.val]
// CHECK:STDOUT: %.loc18_20.2: ref %TrivialRange = temporary %.loc18_18.2, %.loc18_20.1 [concrete = constants.%.50e]
// CHECK:STDOUT: %impl.elem2: %.46f = impl_witness_access constants.%Iterate.impl_witness, element2 [concrete = constants.%TrivialRange.as.Iterate.impl.NewCursor.93de00.2]
// CHECK:STDOUT: %bound_method.loc18_35.1: <bound method> = bound_method %.loc18_20.2, %impl.elem2 [concrete = constants.%TrivialRange.as.Iterate.impl.NewCursor.bound.464]
// CHECK:STDOUT: %.loc18_20.3: %TrivialRange = acquire_value %.loc18_20.2 [concrete = constants.%TrivialRange.val]
// CHECK:STDOUT: %NewCursor.ref: %TrivialRange.as.Iterate.impl.NewCursor.type.de32c1.1 = name_ref NewCursor, @TrivialRange.as.Iterate.impl.%TrivialRange.as.Iterate.impl.NewCursor.decl.loc6_39.1 [concrete = constants.%TrivialRange.as.Iterate.impl.NewCursor.93de00.1]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.bound: <bound method> = bound_method %.loc18_20.3, %NewCursor.ref [concrete = constants.%TrivialRange.as.Iterate.impl.NewCursor.bound.410]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.call: init %empty_tuple.type = call %TrivialRange.as.Iterate.impl.NewCursor.bound(%.loc18_20.3)
// CHECK:STDOUT: %var: ref %empty_tuple.type = var invalid
// CHECK:STDOUT: assign %var, %TrivialRange.as.Iterate.impl.NewCursor.call
// CHECK:STDOUT: br !for.next
// CHECK:STDOUT:
// CHECK:STDOUT: !for.next:
// CHECK:STDOUT: %addr: %ptr.843 = addr_of %var
// CHECK:STDOUT: %impl.elem3: %.eb2 = impl_witness_access constants.%Iterate.impl_witness, element3 [concrete = constants.%TrivialRange.as.Iterate.impl.Next]
// CHECK:STDOUT: %bound_method.loc18_35.2: <bound method> = bound_method %.loc18_20.2, %impl.elem3 [concrete = constants.%TrivialRange.as.Iterate.impl.Next.bound]
// CHECK:STDOUT: %.loc18_35.1: ref %Optional.21a = temporary_storage
// CHECK:STDOUT: %.loc18_20.4: %TrivialRange = acquire_value %.loc18_20.2 [concrete = constants.%TrivialRange.val]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next.call: init %Optional.21a to %.loc18_35.1 = call %bound_method.loc18_35.2(%.loc18_20.4, %addr)
// CHECK:STDOUT: %.loc18_35.2: ref %Optional.21a = temporary %.loc18_35.1, %TrivialRange.as.Iterate.impl.Next.call
// CHECK:STDOUT: %.loc18_35.3: %Optional.HasValue.type.650 = specific_constant imports.%Core.import_ref.1db, @Optional(constants.%Copy.facet) [concrete = constants.%Optional.HasValue.d37]
// CHECK:STDOUT: %HasValue.ref: %Optional.HasValue.type.650 = name_ref HasValue, %.loc18_35.3 [concrete = constants.%Optional.HasValue.d37]
// CHECK:STDOUT: %Optional.HasValue.bound: <bound method> = bound_method %.loc18_35.2, %HasValue.ref
// CHECK:STDOUT: %Optional.HasValue.specific_fn: <specific function> = specific_function %HasValue.ref, @Optional.HasValue(constants.%Copy.facet) [concrete = constants.%Optional.HasValue.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_35.3: <bound method> = bound_method %.loc18_35.2, %Optional.HasValue.specific_fn
// CHECK:STDOUT: %.loc18_35.4: %Optional.21a = acquire_value %.loc18_35.2
// CHECK:STDOUT: %Optional.HasValue.call: init bool = call %bound_method.loc18_35.3(%.loc18_35.4)
// CHECK:STDOUT: %.loc18_35.5: bool = value_of_initializer %Optional.HasValue.call
// CHECK:STDOUT: %.loc18_35.6: bool = converted %Optional.HasValue.call, %.loc18_35.5
// CHECK:STDOUT: if %.loc18_35.6 br !for.body else br !for.done
// CHECK:STDOUT:
// CHECK:STDOUT: !for.body:
// CHECK:STDOUT: %.loc18_35.7: %Optional.Get.type.5f1 = specific_constant imports.%Core.import_ref.73b, @Optional(constants.%Copy.facet) [concrete = constants.%Optional.Get.2aa]
// CHECK:STDOUT: %Get.ref: %Optional.Get.type.5f1 = name_ref Get, %.loc18_35.7 [concrete = constants.%Optional.Get.2aa]
// CHECK:STDOUT: %Optional.Get.bound: <bound method> = bound_method %.loc18_35.2, %Get.ref
// CHECK:STDOUT: %Optional.Get.specific_fn: <specific function> = specific_function %Get.ref, @Optional.Get(constants.%Copy.facet) [concrete = constants.%Optional.Get.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_35.4: <bound method> = bound_method %.loc18_35.2, %Optional.Get.specific_fn
// CHECK:STDOUT: %.loc18_35.8: %Optional.21a = acquire_value %.loc18_35.2
// CHECK:STDOUT: %Optional.Get.call: init %empty_tuple.type = call %bound_method.loc18_35.4(%.loc18_35.8)
// CHECK:STDOUT: %.loc18_12.1: type = splice_block %.loc18_12.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT: %.loc18_12.2: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %.loc18_12.3: type = converted %.loc18_12.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc18_35.9: ref %empty_tuple.type = temporary_storage
// CHECK:STDOUT: %.loc18_35.10: ref %empty_tuple.type = temporary %.loc18_35.9, %Optional.Get.call
// CHECK:STDOUT: %tuple: %empty_tuple.type = tuple_value () [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %.loc18_35.11: %empty_tuple.type = converted %Optional.Get.call, %tuple [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %_: %empty_tuple.type = value_binding _, %.loc18_35.11
// CHECK:STDOUT: %Body.ref: %Body.type = name_ref Body, file.%Body.decl [concrete = constants.%Body]
// CHECK:STDOUT: %Body.call: init %empty_tuple.type = call %Body.ref()
// CHECK:STDOUT: br !for.next
// CHECK:STDOUT:
// CHECK:STDOUT: !for.done:
// CHECK:STDOUT: %AfterLoop.ref: %AfterLoop.type = name_ref AfterLoop, file.%AfterLoop.decl [concrete = constants.%AfterLoop]
// CHECK:STDOUT: %AfterLoop.call: init %empty_tuple.type = call %AfterLoop.ref()
// CHECK:STDOUT: %Destroy.Op.bound.loc18_35.1: <bound method> = bound_method %.loc18_35.10, constants.%Destroy.Op.1a2547.1
// CHECK:STDOUT: %Destroy.Op.call.loc18_35.1: init %empty_tuple.type = call %Destroy.Op.bound.loc18_35.1(%.loc18_35.10)
// CHECK:STDOUT: %Destroy.Op.bound.loc18_35.2: <bound method> = bound_method %.loc18_35.2, constants.%Destroy.Op.1a2547.4
// CHECK:STDOUT: %Destroy.Op.call.loc18_35.2: init %empty_tuple.type = call %Destroy.Op.bound.loc18_35.2(%.loc18_35.2)
// CHECK:STDOUT: %Destroy.Op.bound.loc18_35.3: <bound method> = bound_method %var, constants.%Destroy.Op.1a2547.1
// CHECK:STDOUT: %Destroy.Op.call.loc18_35.3: init %empty_tuple.type = call %Destroy.Op.bound.loc18_35.3(%var)
// CHECK:STDOUT: %Destroy.Op.call.loc18_20: init %empty_tuple.type = call constants.%Destroy.Op.bound(constants.%.50e)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc18_35.1(%self.param: ref %empty_tuple.type) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc18_35.2(%self.param: ref bool) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc18_35.3(%self.param: ref %struct_type.has_value.value.da2) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc18_35.4(%self.param: ref %Optional.21a) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc18_20.1(%self.param: ref %empty_struct_type) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc18_20.2(%self.param: ref %TrivialRange) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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