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carbon-lang/toolchain/check/testdata/generic/var_param.carbon
T
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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/generic/var_param.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/generic/var_param.carbon
interface I {
fn Op[self: Self]();
}
impl i32 as I {
fn Op[unused self: Self]() {}
}
//@dump-sem-ir-begin
fn TestOp[T:! I](unused var x: T) {}
//@dump-sem-ir-end
fn Test(x: i32) {
//@dump-sem-ir-begin
TestOp(x);
//@dump-sem-ir-end
}
// CHECK:STDOUT: --- var_param.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %I.impl_witness: <witness> = impl_witness @i32.as.I.impl.%I.impl_witness_table [concrete]
// CHECK:STDOUT: %pattern_type.c6b: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %I.facet: %I.type = facet_value %i32, (%I.impl_witness) [concrete]
// CHECK:STDOUT: %i32.builtin: type = int_type signed, %int_32 [concrete]
// CHECK:STDOUT: %complete_type.f8a: <witness> = complete_type_witness %i32.builtin [concrete]
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %pattern_type.b21: type = pattern_type %I.type [concrete]
// CHECK:STDOUT: %T.74b: %I.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %T.as_type.69c: type = facet_access_type %T.74b [symbolic]
// CHECK:STDOUT: %pattern_type.407: type = pattern_type %T.as_type.69c [symbolic]
// CHECK:STDOUT: %TestOp.type: type = fn_type @TestOp [concrete]
// CHECK:STDOUT: %TestOp: %TestOp.type = struct_value () [concrete]
// CHECK:STDOUT: %require_complete.a51: <witness> = require_complete_type %T.as_type.69c [symbolic]
// CHECK:STDOUT: %TestOp.specific_fn: <specific function> = specific_function %TestOp, @TestOp(%I.facet) [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.b5d: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%N) [symbolic]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.c85: %Int.as.Copy.impl.Op.type.b5d = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.32d: <witness> = impl_witness imports.%Copy.impl_witness_table.07a, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.4a0: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.c4a: %Int.as.Copy.impl.Op.type.4a0 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %i32, (%Copy.impl_witness.32d) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.afe: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet) [concrete]
// CHECK:STDOUT: %.a5f: type = fn_type_with_self_type %Copy.WithSelf.Op.type.afe, %Copy.facet [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Copy.impl.Op.c4a, @Int.as.Copy.impl.Op(%int_32) [concrete]
// CHECK:STDOUT: %Destroy.Op.type.af7ec0.2: type = fn_type @Destroy.Op.loc22_25.2 [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.809: @Int.as.Copy.impl.%Int.as.Copy.impl.Op.type (%Int.as.Copy.impl.Op.type.b5d) = 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.c85)]
// CHECK:STDOUT: %Copy.impl_witness_table.07a = impl_witness_table (%Core.import_ref.809), @Int.as.Copy.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: %TestOp.decl: %TestOp.type = fn_decl @TestOp [concrete = constants.%TestOp] {
// CHECK:STDOUT: %T.patt: %pattern_type.b21 = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: %x.patt: @TestOp.%pattern_type (%pattern_type.407) = ref_binding_pattern x [concrete]
// CHECK:STDOUT: %x.param_patt: @TestOp.%pattern_type (%pattern_type.407) = var_param_pattern %x.patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc22_15: 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.loc22_12.2: %I.type = symbolic_binding T, 0 [symbolic = %T.loc22_12.1 (constants.%T.74b)]
// CHECK:STDOUT: %x.param: ref @TestOp.%T.as_type.loc22_32.1 (%T.as_type.69c) = ref_param call_param0
// CHECK:STDOUT: %.loc22_32.1: type = splice_block %.loc22_32.2 [symbolic = %T.as_type.loc22_32.1 (constants.%T.as_type.69c)] {
// CHECK:STDOUT: %T.ref: %I.type = name_ref T, %T.loc22_12.2 [symbolic = %T.loc22_12.1 (constants.%T.74b)]
// CHECK:STDOUT: %T.as_type.loc22_32.2: type = facet_access_type %T.ref [symbolic = %T.as_type.loc22_32.1 (constants.%T.as_type.69c)]
// CHECK:STDOUT: %.loc22_32.2: type = converted %T.ref, %T.as_type.loc22_32.2 [symbolic = %T.as_type.loc22_32.1 (constants.%T.as_type.69c)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %x: ref @TestOp.%T.as_type.loc22_32.1 (%T.as_type.69c) = ref_binding x, %x.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @TestOp(%T.loc22_12.2: %I.type) {
// CHECK:STDOUT: %T.loc22_12.1: %I.type = symbolic_binding T, 0 [symbolic = %T.loc22_12.1 (constants.%T.74b)]
// CHECK:STDOUT: %T.as_type.loc22_32.1: type = facet_access_type %T.loc22_12.1 [symbolic = %T.as_type.loc22_32.1 (constants.%T.as_type.69c)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %T.as_type.loc22_32.1 [symbolic = %pattern_type (constants.%pattern_type.407)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %T.as_type.loc22_32.1 [symbolic = %require_complete (constants.%require_complete.a51)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%x.param: ref @TestOp.%T.as_type.loc22_32.1 (%T.as_type.69c)) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Test(%x.param: %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %TestOp.ref: %TestOp.type = name_ref TestOp, file.%TestOp.decl [concrete = constants.%TestOp]
// CHECK:STDOUT: %x.ref: %i32 = name_ref x, %x
// CHECK:STDOUT: %I.facet: %I.type = facet_value constants.%i32, (constants.%I.impl_witness) [concrete = constants.%I.facet]
// CHECK:STDOUT: %.loc27: %I.type = converted constants.%i32, %I.facet [concrete = constants.%I.facet]
// CHECK:STDOUT: %TestOp.specific_fn: <specific function> = specific_function %TestOp.ref, @TestOp(constants.%I.facet) [concrete = constants.%TestOp.specific_fn]
// CHECK:STDOUT: %impl.elem0: %.a5f = impl_witness_access constants.%Copy.impl_witness.32d, element0 [concrete = constants.%Int.as.Copy.impl.Op.c4a]
// CHECK:STDOUT: %bound_method.loc27_10.1: <bound method> = bound_method %x.ref, %impl.elem0
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc27_10.2: <bound method> = bound_method %x.ref, %specific_fn
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc27_10.2(%x.ref)
// CHECK:STDOUT: %x.var: ref %i32 = var @TestOp.%x.param_patt
// CHECK:STDOUT: assign %x.var, %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: %TestOp.call: init %empty_tuple.type = call %TestOp.specific_fn(%x.var)
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %x.var, constants.%Destroy.Op.1dc86d.2
// CHECK:STDOUT: %Destroy.Op.call: init %empty_tuple.type = call %Destroy.Op.bound(%x.var)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc22_25.1(%self.param: ref %i32.builtin) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc22_25.2(%self.param: ref %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @TestOp(constants.%T.74b) {
// CHECK:STDOUT: %T.loc22_12.1 => constants.%T.74b
// CHECK:STDOUT: %T.as_type.loc22_32.1 => constants.%T.as_type.69c
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.407
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @TestOp(constants.%I.facet) {
// CHECK:STDOUT: %T.loc22_12.1 => constants.%I.facet
// CHECK:STDOUT: %T.as_type.loc22_32.1 => constants.%i32
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.c6b
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete => constants.%complete_type.f8a
// CHECK:STDOUT: }
// CHECK:STDOUT:
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