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carbon-lang/toolchain/check/testdata/as/maybe_unformed.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/unformed.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/as/maybe_unformed.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/as/maybe_unformed.carbon
// --- add_unformed.carbon
library "[[@TEST_NAME]]";
class X {}
var reference: X;
let ptr: X* = &reference;
fn Use() {
// TODO: Should some of these be valid without the `as`?
//@dump-sem-ir-begin
let unused a: Core.MaybeUnformed(X)* = &(reference as Core.MaybeUnformed(X));
let unused b: Core.MaybeUnformed(X)* = ptr as Core.MaybeUnformed(X)*;
//@dump-sem-ir-end
}
// --- fail_todo_add_unformed_nonref.carbon
library "[[@TEST_NAME]]";
class X {}
fn Init() -> X;
let value: X = Init();
fn Use() {
// TODO: These should probably be valid.
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_add_unformed_nonref.carbon:[[@LINE+7]]:41: error: cannot convert expression of type `X` to `Core.MaybeUnformed(X)` with `as` [ConversionFailure]
// CHECK:STDERR: var unused i: Core.MaybeUnformed(X) = Init() as Core.MaybeUnformed(X);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_add_unformed_nonref.carbon:[[@LINE+4]]:41: note: type `X` does not implement interface `Core.As(Core.MaybeUnformed(X))` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: var unused i: Core.MaybeUnformed(X) = Init() as Core.MaybeUnformed(X);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
var unused i: Core.MaybeUnformed(X) = Init() as Core.MaybeUnformed(X);
// CHECK:STDERR: fail_todo_add_unformed_nonref.carbon:[[@LINE+7]]:41: error: cannot convert expression of type `X` to `Core.MaybeUnformed(X)` with `as` [ConversionFailure]
// CHECK:STDERR: let unused v: Core.MaybeUnformed(X) = value as Core.MaybeUnformed(X);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_add_unformed_nonref.carbon:[[@LINE+4]]:41: note: type `X` does not implement interface `Core.As(Core.MaybeUnformed(X))` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: let unused v: Core.MaybeUnformed(X) = value as Core.MaybeUnformed(X);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
let unused v: Core.MaybeUnformed(X) = value as Core.MaybeUnformed(X);
//@dump-sem-ir-end
}
// --- fail_cannot_remove_unformed.carbon
library "[[@TEST_NAME]]";
class X {}
fn Init() -> Core.MaybeUnformed(X);
let value: Core.MaybeUnformed(X) = Init();
var reference: Core.MaybeUnformed(X);
let ptr: Core.MaybeUnformed(X)* = &reference;
fn Use() {
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+7]]:21: error: cannot convert expression of type `Core.MaybeUnformed(X)` to `X` with `as` [ConversionFailure]
// CHECK:STDERR: var unused i: X = Init() as X;
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+4]]:21: note: type `Core.MaybeUnformed(X)` does not implement interface `Core.As(X)` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: var unused i: X = Init() as X;
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR:
var unused i: X = Init() as X;
// TODO: The diagnostic should explain that the reason we can't perform this
// conversion is due to the expression category.
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+7]]:21: error: cannot convert expression of type `Core.MaybeUnformed(X)` to `X` with `unsafe as` [ConversionFailure]
// CHECK:STDERR: var unused j: X = Init() unsafe as X;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+4]]:21: note: type `Core.MaybeUnformed(X)` does not implement interface `Core.UnsafeAs(X)` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: var unused j: X = Init() unsafe as X;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
var unused j: X = Init() unsafe as X;
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+7]]:21: error: cannot convert expression of type `Core.MaybeUnformed(X)` to `X` with `as` [ConversionFailure]
// CHECK:STDERR: let unused v: X = value as X;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+4]]:21: note: type `Core.MaybeUnformed(X)` does not implement interface `Core.As(X)` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: let unused v: X = value as X;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
let unused v: X = value as X;
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+7]]:24: error: cannot convert expression of type `Core.MaybeUnformed(X)` to `X` with `as` [ConversionFailure]
// CHECK:STDERR: let unused a: X* = &(reference as X);
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+4]]:24: note: type `Core.MaybeUnformed(X)` does not implement interface `Core.As(X)` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: let unused a: X* = &(reference as X);
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR:
let unused a: X* = &(reference as X);
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+7]]:22: error: cannot convert expression of type `Core.MaybeUnformed(X)*` to `X*` with `as` [ConversionFailure]
// CHECK:STDERR: let unused b: X* = ptr as X*;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_cannot_remove_unformed.carbon:[[@LINE+4]]:22: note: type `Core.MaybeUnformed(X)*` does not implement interface `Core.As(X*)` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: let unused b: X* = ptr as X*;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
let unused b: X* = ptr as X*;
}
// --- unsafe_remove_unformed.carbon
library "[[@TEST_NAME]]";
class X {}
fn Init() -> Core.MaybeUnformed(X);
let value: Core.MaybeUnformed(X) = Init();
var reference: Core.MaybeUnformed(X);
let ptr: Core.MaybeUnformed(X)* = &reference;
fn Use() {
//@dump-sem-ir-begin
let unused v: X = value unsafe as X;
let unused a: X* = &(reference unsafe as X);
let unused b: X* = ptr unsafe as X*;
//@dump-sem-ir-end
}
// CHECK:STDOUT: --- add_unformed.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %X: type = class_type @X [concrete]
// CHECK:STDOUT: %DefaultOrUnformed.type: type = facet_type <@DefaultOrUnformed> [concrete]
// CHECK:STDOUT: %ptr.74f: type = ptr_type %X [concrete]
// CHECK:STDOUT: %MaybeUnformed.type: type = generic_class_type @MaybeUnformed [concrete]
// CHECK:STDOUT: %MaybeUnformed.generic: %MaybeUnformed.type = struct_value () [concrete]
// CHECK:STDOUT: %MaybeUnformed.703: type = class_type @MaybeUnformed, @MaybeUnformed(%X) [concrete]
// CHECK:STDOUT: %ptr.af1: type = ptr_type %MaybeUnformed.703 [concrete]
// CHECK:STDOUT: %pattern_type.242: type = pattern_type %ptr.af1 [concrete]
// CHECK:STDOUT: %reference.var: ref %MaybeUnformed.703 = var file.%reference.var_patt [concrete]
// CHECK:STDOUT: %addr.f00: %ptr.af1 = addr_of %reference.var [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .DefaultOrUnformed = %Core.DefaultOrUnformed
// CHECK:STDOUT: .MaybeUnformed = %Core.MaybeUnformed
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.DefaultOrUnformed: type = import_ref Core//prelude/parts/default, DefaultOrUnformed, loaded [concrete = constants.%DefaultOrUnformed.type]
// CHECK:STDOUT: %Core.MaybeUnformed: %MaybeUnformed.type = import_ref Core//prelude/parts/maybe_unformed, MaybeUnformed, loaded [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Use() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: %pattern_type.242 = value_binding_pattern a [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %reference.ref: ref %X = name_ref reference, file.%reference [concrete = file.%reference.var]
// CHECK:STDOUT: %Core.ref.loc12_57: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc12_61: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc12_76: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc12_77: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.703]
// CHECK:STDOUT: %.loc12_54.1: ref %MaybeUnformed.703 = as_compatible %reference.ref [concrete = constants.%reference.var]
// CHECK:STDOUT: %.loc12_54.2: ref %MaybeUnformed.703 = converted %reference.ref, %.loc12_54.1 [concrete = constants.%reference.var]
// CHECK:STDOUT: %addr: %ptr.af1 = addr_of %.loc12_54.2 [concrete = constants.%addr.f00]
// CHECK:STDOUT: %.loc12_38: type = splice_block %ptr.loc12 [concrete = constants.%ptr.af1] {
// CHECK:STDOUT: %Core.ref.loc12_17: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc12_21: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc12_36: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc12_37: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.703]
// CHECK:STDOUT: %ptr.loc12: type = ptr_type %MaybeUnformed.loc12_37 [concrete = constants.%ptr.af1]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: %ptr.af1 = value_binding a, %addr
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %b.patt: %pattern_type.242 = value_binding_pattern b [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %ptr.ref: %ptr.74f = name_ref ptr, file.%ptr.loc7_8
// CHECK:STDOUT: %Core.ref.loc13_49: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc13_53: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc13_68: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc13_69: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.703]
// CHECK:STDOUT: %ptr.loc13_70: type = ptr_type %MaybeUnformed.loc13_69 [concrete = constants.%ptr.af1]
// CHECK:STDOUT: %.loc13_46.1: %ptr.af1 = as_compatible %ptr.ref
// CHECK:STDOUT: %.loc13_46.2: %ptr.af1 = converted %ptr.ref, %.loc13_46.1
// CHECK:STDOUT: %.loc13_38: type = splice_block %ptr.loc13_38 [concrete = constants.%ptr.af1] {
// CHECK:STDOUT: %Core.ref.loc13_17: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc13_21: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc13_36: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc13_37: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.703]
// CHECK:STDOUT: %ptr.loc13_38: type = ptr_type %MaybeUnformed.loc13_37 [concrete = constants.%ptr.af1]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b: %ptr.af1 = value_binding b, %.loc13_46.2
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_add_unformed_nonref.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %X: type = class_type @X [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %Init.type: type = fn_type @Init [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Init: %Init.type = struct_value () [concrete]
// CHECK:STDOUT: %MaybeUnformed.type: type = generic_class_type @MaybeUnformed [concrete]
// CHECK:STDOUT: %MaybeUnformed.generic: %MaybeUnformed.type = struct_value () [concrete]
// CHECK:STDOUT: %MaybeUnformed.e71: type = class_type @MaybeUnformed, @MaybeUnformed(%X) [concrete]
// CHECK:STDOUT: %pattern_type.199: type = pattern_type %MaybeUnformed.e71 [concrete]
// CHECK:STDOUT: %As.type.fa8: type = generic_interface_type @As [concrete]
// CHECK:STDOUT: %As.generic: %As.type.fa8 = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %Destroy.Op.type.af7ec0.3: type = fn_type @Destroy.Op.loc19_3.3 [concrete]
// CHECK:STDOUT: %Destroy.Op.1dc86d.3: %Destroy.Op.type.af7ec0.3 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .MaybeUnformed = %Core.MaybeUnformed
// CHECK:STDOUT: .As = %Core.As
// CHECK:STDOUT: .Destroy = %Core.Destroy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.MaybeUnformed: %MaybeUnformed.type = import_ref Core//prelude/parts/maybe_unformed, MaybeUnformed, loaded [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %Core.As: %As.type.fa8 = import_ref Core//prelude/parts/as, As, loaded [concrete = constants.%As.generic]
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Use() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %i.patt: %pattern_type.199 = ref_binding_pattern i [concrete]
// CHECK:STDOUT: %i.var_patt: %pattern_type.199 = var_pattern %i.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %i.var: ref %MaybeUnformed.e71 = var %i.var_patt
// CHECK:STDOUT: %Init.ref: %Init.type = name_ref Init, file.%Init.decl [concrete = constants.%Init]
// CHECK:STDOUT: %.loc19_46: ref %X = temporary_storage
// CHECK:STDOUT: %Init.call: init %X to %.loc19_46 = call %Init.ref()
// CHECK:STDOUT: %Core.ref.loc19_51: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc19_55: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc19_70: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc19_71: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.e71]
// CHECK:STDOUT: %.loc19_48: %MaybeUnformed.e71 = converted %Init.call, <error> [concrete = <error>]
// CHECK:STDOUT: assign %i.var, <error>
// CHECK:STDOUT: %.loc19_37: type = splice_block %MaybeUnformed.loc19_37 [concrete = constants.%MaybeUnformed.e71] {
// CHECK:STDOUT: %Core.ref.loc19_17: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc19_21: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc19_36: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc19_37: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.e71]
// CHECK:STDOUT: }
// CHECK:STDOUT: %i: ref %MaybeUnformed.e71 = ref_binding i, %i.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %v.patt: %pattern_type.199 = value_binding_pattern v [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %value.ref: %X = name_ref value, file.%value
// CHECK:STDOUT: %Core.ref.loc27_50: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc27_54: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc27_69: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc27_70: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.e71]
// CHECK:STDOUT: %.loc27_47: %MaybeUnformed.e71 = converted %value.ref, <error> [concrete = <error>]
// CHECK:STDOUT: %.loc27_37: type = splice_block %MaybeUnformed.loc27_37 [concrete = constants.%MaybeUnformed.e71] {
// CHECK:STDOUT: %Core.ref.loc27_17: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %MaybeUnformed.ref.loc27_21: %MaybeUnformed.type = name_ref MaybeUnformed, imports.%Core.MaybeUnformed [concrete = constants.%MaybeUnformed.generic]
// CHECK:STDOUT: %X.ref.loc27_36: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %MaybeUnformed.loc27_37: type = class_type @MaybeUnformed, @MaybeUnformed(constants.%X) [concrete = constants.%MaybeUnformed.e71]
// CHECK:STDOUT: }
// CHECK:STDOUT: %v: %MaybeUnformed.e71 = value_binding v, <error> [concrete = <error>]
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %i.var, constants.%Destroy.Op.1dc86d.3
// CHECK:STDOUT: %Destroy.Op.call: init %empty_tuple.type = call %Destroy.Op.bound(%i.var)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc19_3.1(%self.param: ref %empty_struct_type) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc19_3.2(%self.param: ref %X) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc19_3.3(%self.param: ref %MaybeUnformed.e71) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- unsafe_remove_unformed.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %X: type = class_type @X [concrete]
// CHECK:STDOUT: %MaybeUnformed.bd8: type = class_type @MaybeUnformed, @MaybeUnformed(%X) [concrete]
// CHECK:STDOUT: %ptr.ea6: type = ptr_type %MaybeUnformed.bd8 [concrete]
// CHECK:STDOUT: %pattern_type.06e: type = pattern_type %X [concrete]
// CHECK:STDOUT: %ptr.ef7: type = ptr_type %X [concrete]
// CHECK:STDOUT: %pattern_type.b79: type = pattern_type %ptr.ef7 [concrete]
// CHECK:STDOUT: %reference.var: ref %X = var file.%reference.var_patt [concrete]
// CHECK:STDOUT: %addr.51c: %ptr.ef7 = addr_of %reference.var [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Use() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %v.patt: %pattern_type.06e = value_binding_pattern v [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %value.ref: %MaybeUnformed.bd8 = name_ref value, file.%value
// CHECK:STDOUT: %X.ref.loc13_37: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %.loc13_34.1: %X = as_compatible %value.ref
// CHECK:STDOUT: %.loc13_34.2: %X = converted %value.ref, %.loc13_34.1
// CHECK:STDOUT: %X.ref.loc13_17: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %v: %X = value_binding v, %.loc13_34.2
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: %pattern_type.b79 = value_binding_pattern a [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %reference.ref: ref %MaybeUnformed.bd8 = name_ref reference, file.%reference [concrete = file.%reference.var]
// CHECK:STDOUT: %X.ref.loc14_44: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %.loc14_41.1: ref %X = as_compatible %reference.ref [concrete = constants.%reference.var]
// CHECK:STDOUT: %.loc14_41.2: ref %X = converted %reference.ref, %.loc14_41.1 [concrete = constants.%reference.var]
// CHECK:STDOUT: %addr: %ptr.ef7 = addr_of %.loc14_41.2 [concrete = constants.%addr.51c]
// CHECK:STDOUT: %.loc14_18: type = splice_block %ptr.loc14 [concrete = constants.%ptr.ef7] {
// CHECK:STDOUT: %X.ref.loc14_17: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %ptr.loc14: type = ptr_type %X.ref.loc14_17 [concrete = constants.%ptr.ef7]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: %ptr.ef7 = value_binding a, %addr
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %b.patt: %pattern_type.b79 = value_binding_pattern b [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %ptr.ref: %ptr.ea6 = name_ref ptr, file.%ptr.loc9_8
// CHECK:STDOUT: %X.ref.loc15_36: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %ptr.loc15_37: type = ptr_type %X.ref.loc15_36 [concrete = constants.%ptr.ef7]
// CHECK:STDOUT: %.loc15_33.1: %ptr.ef7 = as_compatible %ptr.ref
// CHECK:STDOUT: %.loc15_33.2: %ptr.ef7 = converted %ptr.ref, %.loc15_33.1
// CHECK:STDOUT: %.loc15_18: type = splice_block %ptr.loc15_18 [concrete = constants.%ptr.ef7] {
// CHECK:STDOUT: %X.ref.loc15_17: type = name_ref X, file.%X.decl [concrete = constants.%X]
// CHECK:STDOUT: %ptr.loc15_18: type = ptr_type %X.ref.loc15_17 [concrete = constants.%ptr.ef7]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b: %ptr.ef7 = value_binding b, %.loc15_33.2
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
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