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carbon-lang/toolchain/check/testdata/function/call/ref.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
// EXTRA-ARGS: --dump-sem-ir-ranges=only
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/function/call/ref.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/call/ref.carbon
// --- basics.carbon
library "[[@TEST_NAME]]";
//@dump-sem-ir-begin
fn F(ref x: i32);
fn G() {
var y: i32 = 0;
F(ref y);
}
//@dump-sem-ir-end
// --- class.carbon
library "[[@TEST_NAME]]";
//@dump-sem-ir-begin
class C {
fn F[ref self: Self]();
}
fn G() {
var c: C;
c.F();
}
//@dump-sem-ir-end
// --- fail_ref_not_durable_ref.carbon
library "[[@TEST_NAME]]";
fn F(ref x: i32);
fn G() {
let y: i32 = 0;
// CHECK:STDERR: fail_ref_not_durable_ref.carbon:[[@LINE+7]]:9: error: expression tagged with `ref` is not a durable reference [RefTagNotDurableRef]
// CHECK:STDERR: F(ref y);
// CHECK:STDERR: ^
// CHECK:STDERR: fail_ref_not_durable_ref.carbon:[[@LINE-7]]:6: note: initializing function parameter [InCallToFunctionParam]
// CHECK:STDERR: fn F(ref x: i32);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
F(ref y);
}
// --- fail_missing_ref.carbon
library "[[@TEST_NAME]]";
fn F(ref x: i32);
fn G() {
var y: i32 = 0;
// CHECK:STDERR: fail_missing_ref.carbon:[[@LINE+7]]:5: error: argument to `ref` parameter not marked with `ref` [RefParamNoRefTag]
// CHECK:STDERR: F(y);
// CHECK:STDERR: ^
// CHECK:STDERR: fail_missing_ref.carbon:[[@LINE-7]]:6: note: initializing function parameter [InCallToFunctionParam]
// CHECK:STDERR: fn F(ref x: i32);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
F(y);
}
// --- fail_unnecessary_ref.carbon
library "[[@TEST_NAME]]";
fn F(x: i32);
fn G() {
var y: i32 = 0;
// CHECK:STDERR: fail_unnecessary_ref.carbon:[[@LINE+4]]:27: error: `ref` tag is not an argument to a `ref` parameter [RefTagNoRefParam]
// CHECK:STDERR: var unused z: (i32,) = (ref y,);
// CHECK:STDERR: ^~~~~
// CHECK:STDERR:
var unused z: (i32,) = (ref y,);
// CHECK:STDERR: fail_unnecessary_ref.carbon:[[@LINE+7]]:5: error: `ref` tag is not an argument to a `ref` parameter [RefTagNoRefParam]
// CHECK:STDERR: F(ref y);
// CHECK:STDERR: ^~~~~
// CHECK:STDERR: fail_unnecessary_ref.carbon:[[@LINE-13]]:6: note: initializing function parameter [InCallToFunctionParam]
// CHECK:STDERR: fn F(x: i32);
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR:
F(ref y);
}
// CHECK:STDOUT: --- basics.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: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.c6b: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
// CHECK:STDOUT: %G: %G.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.544: 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.766: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.ec3: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.fb6: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.1a5, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.ef7: 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.e6b: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.ef7 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.544 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.fb6) [concrete]
// CHECK:STDOUT: %ImplicitAs.WithSelf.Convert.type.367: type = fn_type @ImplicitAs.WithSelf.Convert, @ImplicitAs.WithSelf(%i32, %ImplicitAs.facet) [concrete]
// CHECK:STDOUT: %.205: type = fn_type_with_self_type %ImplicitAs.WithSelf.Convert.type.367, %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.e6b [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.e6b, @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_0.155: %i32 = int_value 0 [concrete]
// CHECK:STDOUT: %Destroy.Op.type.af7ec0.2: type = fn_type @Destroy.Op.loc8_3.2 [concrete]
// CHECK:STDOUT: %Destroy.Op.1dc86d.2: %Destroy.Op.type.af7ec0.2 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core.import_ref.dd3: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766) = 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.ec3)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.1a5 = impl_witness_table (%Core.import_ref.dd3), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %x.param_patt: %pattern_type.c6b = ref_param_pattern [concrete]
// CHECK:STDOUT: %x.patt: %pattern_type.c6b = at_binding_pattern x, %x.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %x.param: ref %i32 = ref_param call_param0
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %x: ref %i32 = ref_binding x, %x.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%x.param: ref %i32);
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %y.patt: %pattern_type.c6b = ref_binding_pattern y [concrete]
// CHECK:STDOUT: %y.var_patt: %pattern_type.c6b = var_pattern %y.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %y.var: ref %i32 = var %y.var_patt
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %impl.elem0: %.205 = impl_witness_access constants.%ImplicitAs.impl_witness.fb6, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.e6b]
// CHECK:STDOUT: %bound_method.loc8_3.1: <bound method> = bound_method %int_0, %impl.elem0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc8_3.2: <bound method> = bound_method %int_0, %specific_fn [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc8_3.2(%int_0) [concrete = constants.%int_0.155]
// CHECK:STDOUT: %.loc8: init %i32 = converted %int_0, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_0.155]
// CHECK:STDOUT: assign %y.var, %.loc8
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %y: ref %i32 = ref_binding y, %y.var
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
// CHECK:STDOUT: %y.ref: ref %i32 = name_ref y, %y
// CHECK:STDOUT: %.loc10: %i32 = ref_tag %y.ref
// CHECK:STDOUT: %F.call: init %empty_tuple.type = call %F.ref(%.loc10)
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %y.var, constants.%Destroy.Op.1dc86d.2
// CHECK:STDOUT: %Destroy.Op.call: init %empty_tuple.type = call %Destroy.Op.bound(%y.var)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc8_3.1(%self.param: ref %i32.builtin) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc8_3.2(%self.param: ref %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- class.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %pattern_type.8d6: type = pattern_type %C [concrete]
// CHECK:STDOUT: %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
// CHECK:STDOUT: %G: %G.type = struct_value () [concrete]
// CHECK:STDOUT: %DefaultOrUnformed.type: type = facet_type <@DefaultOrUnformed> [concrete]
// CHECK:STDOUT: %T.67d: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.type.d5a: type = fn_type @T.as.DefaultOrUnformed.impl.Op, @T.as.DefaultOrUnformed.impl(%T.67d) [symbolic]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.9f4: %T.as.DefaultOrUnformed.impl.Op.type.d5a = struct_value () [symbolic]
// CHECK:STDOUT: %DefaultOrUnformed.impl_witness.26a: <witness> = impl_witness imports.%DefaultOrUnformed.impl_witness_table.f82, @T.as.DefaultOrUnformed.impl(%C) [concrete]
// CHECK:STDOUT: %DefaultOrUnformed.facet: %DefaultOrUnformed.type = facet_value %C, (%DefaultOrUnformed.impl_witness.26a) [concrete]
// CHECK:STDOUT: %Destroy.Op.type.af7ec0.2: type = fn_type @Destroy.Op.loc10_3.2 [concrete]
// CHECK:STDOUT: %Destroy.Op.1dc86d.2: %Destroy.Op.type.af7ec0.2 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core.import_ref.b30: @T.as.DefaultOrUnformed.impl.%T.as.DefaultOrUnformed.impl.Op.type (%T.as.DefaultOrUnformed.impl.Op.type.d5a) = import_ref Core//prelude/parts/default, loc{{\d+_\d+}}, loaded [symbolic = @T.as.DefaultOrUnformed.impl.%T.as.DefaultOrUnformed.impl.Op (constants.%T.as.DefaultOrUnformed.impl.Op.9f4)]
// CHECK:STDOUT: %DefaultOrUnformed.impl_witness_table.f82 = impl_witness_table (%Core.import_ref.b30), @T.as.DefaultOrUnformed.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %C.F.decl: %C.F.type = fn_decl @C.F [concrete = constants.%C.F] {
// CHECK:STDOUT: %self.param_patt: %pattern_type.8d6 = ref_param_pattern [concrete]
// CHECK:STDOUT: %self.patt: %pattern_type.8d6 = at_binding_pattern self, %self.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: ref %C = ref_param call_param0
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%C [concrete = constants.%C]
// CHECK:STDOUT: %self: ref %C = ref_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: .F = %C.F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F(%self.param: ref %C);
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %c.patt: %pattern_type.8d6 = ref_binding_pattern c [concrete]
// CHECK:STDOUT: %c.var_patt: %pattern_type.8d6 = var_pattern %c.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c.var: ref %C = var %c.var_patt
// CHECK:STDOUT: %DefaultOrUnformed.facet: %DefaultOrUnformed.type = facet_value constants.%C, (constants.%DefaultOrUnformed.impl_witness.26a) [concrete = constants.%DefaultOrUnformed.facet]
// CHECK:STDOUT: %.loc10_11.1: %DefaultOrUnformed.type = converted constants.%C, %DefaultOrUnformed.facet [concrete = constants.%DefaultOrUnformed.facet]
// CHECK:STDOUT: %as_type: type = facet_access_type %.loc10_11.1 [concrete = constants.%C]
// CHECK:STDOUT: %.loc10_11.2: type = converted %.loc10_11.1, %as_type [concrete = constants.%C]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %.loc10_3: ref %C = splice_block %c.var {}
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.call: init %C to %.loc10_3 = call %T.as.DefaultOrUnformed.impl.Op.specific_fn()
// CHECK:STDOUT: assign %c.var, %T.as.DefaultOrUnformed.impl.Op.call
// CHECK:STDOUT: %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %c: ref %C = ref_binding c, %c.var
// CHECK:STDOUT: %c.ref: ref %C = name_ref c, %c
// CHECK:STDOUT: %F.ref: %C.F.type = name_ref F, @C.%C.F.decl [concrete = constants.%C.F]
// CHECK:STDOUT: %C.F.bound: <bound method> = bound_method %c.ref, %F.ref
// CHECK:STDOUT: %C.F.call: init %empty_tuple.type = call %C.F.bound(%c.ref)
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %c.var, constants.%Destroy.Op.1dc86d.2
// CHECK:STDOUT: %Destroy.Op.call: init %empty_tuple.type = call %Destroy.Op.bound(%c.var)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc10_3.1(%self.param: ref %empty_struct_type) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc10_3.2(%self.param: ref %C) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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