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carbon-lang/toolchain/check/testdata/pointer/basic.carbon
T
Dana Jansens f8dd4d85bf Do not treat impls in different scopes as redeclarations (#7161) 
An impl in a different scope, with the same parameters, will overlap and
get diagnosed for that later by the [prioritization
rule](https://docs.carbon-lang.dev/docs/design/generics/details.html#prioritization-rule),
if they are not in a match_first block. But they are not considered as
redeclarations.

See [proposal
p5366](https://github.com/carbon-language/carbon-lang/blob/62b94f79322039acc3fc8e175896a64a32df470e/proposals/p5366.md)
for the rule.
2026-05-04 19:11:51 +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/pointer/basic.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/pointer/basic.carbon
fn F() -> i32 {
var n: i32 = 0;
var p: i32* = &n;
return *p;
}
// CHECK:STDOUT: --- basic.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %.ff5: Core.Form = init_form %i32 [concrete]
// CHECK:STDOUT: %pattern_type.7ce: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %i32.builtin: type = int_type signed, %int_32 [concrete]
// CHECK:STDOUT: %int_0.5c6: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %ImplicitAs.type.cc7: type = generic_interface_type @ImplicitAs [concrete]
// CHECK:STDOUT: %ImplicitAs.generic: %ImplicitAs.type.cc7 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.type.e8c: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.f67: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.8fd: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.f67 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.ac5: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.82d, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.a56: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.f1a: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.a56 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.e8c = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.ac5) [concrete]
// CHECK:STDOUT: %ImplicitAs.WithSelf.Convert.type.b91: type = fn_type @ImplicitAs.WithSelf.Convert, @ImplicitAs.WithSelf(%i32, %ImplicitAs.facet) [concrete]
// CHECK:STDOUT: %.9db: type = fn_type_with_self_type %ImplicitAs.WithSelf.Convert.type.b91, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.f1a [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.f1a, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_0.6a9: %i32 = int_value 0 [concrete]
// CHECK:STDOUT: %ptr.235: type = ptr_type %i32 [concrete]
// CHECK:STDOUT: %pattern_type.fe8: type = pattern_type %ptr.235 [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.161: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%N) [symbolic]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.012: %Int.as.Copy.impl.Op.type.161 = struct_value () [symbolic]
// CHECK:STDOUT: %T.67d: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.type.45b: type = fn_type @ptr.as.Copy.impl.Op, @ptr.as.Copy.impl(%T.67d) [symbolic]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.69b: %ptr.as.Copy.impl.Op.type.45b = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.897: <witness> = impl_witness imports.%Copy.impl_witness_table.852, @ptr.as.Copy.impl(%i32) [concrete]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.type.2c4: type = fn_type @ptr.as.Copy.impl.Op, @ptr.as.Copy.impl(%i32) [concrete]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.a8b: %ptr.as.Copy.impl.Op.type.2c4 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet.d09: %Copy.type = facet_value %ptr.235, (%Copy.impl_witness.897) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.a05: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet.d09) [concrete]
// CHECK:STDOUT: %.88a: type = fn_type_with_self_type %Copy.WithSelf.Op.type.a05, %Copy.facet.d09 [concrete]
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %ptr.as.Copy.impl.Op.a8b, @ptr.as.Copy.impl.Op(%i32) [concrete]
// CHECK:STDOUT: %Copy.impl_witness.30d: <witness> = impl_witness imports.%Copy.impl_witness_table.1ee, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.aa9: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.44b: %Int.as.Copy.impl.Op.type.aa9 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet.d1a: %Copy.type = facet_value %i32, (%Copy.impl_witness.30d) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.cee: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet.d1a) [concrete]
// CHECK:STDOUT: %.348: type = fn_type_with_self_type %Copy.WithSelf.Op.type.cee, %Copy.facet.d1a [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Copy.impl.Op.44b, @Int.as.Copy.impl.Op(%int_32) [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %Destroy.Op.type.bae255.1: type = fn_type @Destroy.Op.loc17 [concrete]
// CHECK:STDOUT: %Destroy.Op.651ba6.1: %Destroy.Op.type.bae255.1 = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.Op.type.bae255.3: type = fn_type @Destroy.Op.loc16_3.2 [concrete]
// CHECK:STDOUT: %Destroy.Op.651ba6.3: %Destroy.Op.type.bae255.3 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: .Copy = %Core.Copy
// CHECK:STDOUT: .Destroy = %Core.Destroy
// 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.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: %Core.import_ref.70a: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.f67) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert (constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.8fd)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.82d = impl_witness_table (%Core.import_ref.70a), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
// CHECK:STDOUT: %Core.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
// CHECK:STDOUT: %Core.import_ref.dbb: @Int.as.Copy.impl.%Int.as.Copy.impl.Op.type (%Int.as.Copy.impl.Op.type.161) = 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.012)]
// CHECK:STDOUT: %Copy.impl_witness_table.1ee = impl_witness_table (%Core.import_ref.dbb), @Int.as.Copy.impl [concrete]
// CHECK:STDOUT: %Core.import_ref.291: @ptr.as.Copy.impl.%ptr.as.Copy.impl.Op.type (%ptr.as.Copy.impl.Op.type.45b) = 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.69b)]
// CHECK:STDOUT: %Copy.impl_witness_table.852 = impl_witness_table (%Core.import_ref.291), @ptr.as.Copy.impl [concrete]
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %return.param_patt: %pattern_type.7ce = out_param_pattern [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.7ce = return_slot_pattern %return.param_patt, %i32.loc15 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc15: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc15: Core.Form = init_form %i32.loc15 [concrete = constants.%.ff5]
// CHECK:STDOUT: %return.param: ref %i32 = out_param call_param0
// CHECK:STDOUT: %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %n.patt: %pattern_type.7ce = ref_binding_pattern n [concrete]
// CHECK:STDOUT: %n.var_patt: %pattern_type.7ce = var_pattern %n.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %n.var: ref %i32 = var %n.var_patt
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %impl.elem0.loc16: %.9db = impl_witness_access constants.%ImplicitAs.impl_witness.ac5, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.f1a]
// CHECK:STDOUT: %bound_method.loc16_3.1: <bound method> = bound_method %int_0, %impl.elem0.loc16 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn.loc16: <specific function> = specific_function %impl.elem0.loc16, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc16_3.2: <bound method> = bound_method %int_0, %specific_fn.loc16 [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc16_3.2(%int_0) [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: %.loc16: init %i32 = converted %int_0, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: assign %n.var, %.loc16
// CHECK:STDOUT: %i32.loc16: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %n: ref %i32 = ref_binding n, %n.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %p.patt: %pattern_type.fe8 = ref_binding_pattern p [concrete]
// CHECK:STDOUT: %p.var_patt: %pattern_type.fe8 = var_pattern %p.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %p.var: ref %ptr.235 = var %p.var_patt
// CHECK:STDOUT: %n.ref: ref %i32 = name_ref n, %n
// CHECK:STDOUT: %addr: %ptr.235 = addr_of %n.ref
// CHECK:STDOUT: %impl.elem0.loc17: %.88a = impl_witness_access constants.%Copy.impl_witness.897, element0 [concrete = constants.%ptr.as.Copy.impl.Op.a8b]
// CHECK:STDOUT: %bound_method.loc17_17.1: <bound method> = bound_method %addr, %impl.elem0.loc17
// CHECK:STDOUT: %specific_fn.loc17: <specific function> = specific_function %impl.elem0.loc17, @ptr.as.Copy.impl.Op(constants.%i32) [concrete = constants.%ptr.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc17_17.2: <bound method> = bound_method %addr, %specific_fn.loc17
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.call: init %ptr.235 = call %bound_method.loc17_17.2(%addr)
// CHECK:STDOUT: assign %p.var, %ptr.as.Copy.impl.Op.call
// CHECK:STDOUT: %.loc17: type = splice_block %ptr [concrete = constants.%ptr.235] {
// CHECK:STDOUT: %i32.loc17: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %ptr: type = ptr_type %i32.loc17 [concrete = constants.%ptr.235]
// CHECK:STDOUT: }
// CHECK:STDOUT: %p: ref %ptr.235 = ref_binding p, %p.var
// CHECK:STDOUT: %p.ref: ref %ptr.235 = name_ref p, %p
// CHECK:STDOUT: %.loc19_11: %ptr.235 = acquire_value %p.ref
// CHECK:STDOUT: %.loc19_10.1: ref %i32 = deref %.loc19_11
// CHECK:STDOUT: %.loc19_10.2: %i32 = acquire_value %.loc19_10.1
// CHECK:STDOUT: %impl.elem0.loc19: %.348 = impl_witness_access constants.%Copy.impl_witness.30d, element0 [concrete = constants.%Int.as.Copy.impl.Op.44b]
// CHECK:STDOUT: %bound_method.loc19_10.1: <bound method> = bound_method %.loc19_10.2, %impl.elem0.loc19
// CHECK:STDOUT: %specific_fn.loc19: <specific function> = specific_function %impl.elem0.loc19, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc19_10.2: <bound method> = bound_method %.loc19_10.2, %specific_fn.loc19
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc19_10.2(%.loc19_10.2)
// CHECK:STDOUT: %Destroy.Op.bound.loc17: <bound method> = bound_method %p.var, constants.%Destroy.Op.651ba6.1
// CHECK:STDOUT: %Destroy.Op.call.loc17: init %empty_tuple.type = call %Destroy.Op.bound.loc17(%p.var)
// CHECK:STDOUT: %Destroy.Op.bound.loc16: <bound method> = bound_method %n.var, constants.%Destroy.Op.651ba6.3
// CHECK:STDOUT: %Destroy.Op.call.loc16: init %empty_tuple.type = call %Destroy.Op.bound.loc16(%n.var)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc17(%self.param: ref %ptr.235) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc16_3.1(%self.param: ref %i32.builtin) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc16_3.2(%self.param: ref %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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