Fix handling of deleted and templated constructors. (#6129)

Don't ignore deleted constructors in overload resolution. If one is the
best match, we want an error rather than picking something else. Don't
crash if we find a constructor template or other weird thing; use
`getConstructorInfo` to map it into a constructor and skip it if it
isn't one, like Clang does.

toolchain/check/cpp/import.cpp

@@ -21,6 +21,7 @@
 #include "clang/Frontend/TextDiagnostic.h"
 #include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Sema/Lookup.h"
+#include "clang/Sema/Overload.h"
 #include "common/check.h"
 #include "common/ostream.h"
 #include "common/raw_string_ostream.h"
@@ -2117,12 +2118,12 @@ static auto ImportConstructorsIntoScope(Context& context, SemIR::LocId loc_id,
       ClangConstructorLookup(context, scope_id);
 
   clang::UnresolvedSet<4> overload_set;
-  for (clang::Decl* decl : constructors_lookup) {
-    auto* constructor = cast<clang::CXXConstructorDecl>(decl);
-    if (constructor->isDeleted() || constructor->isCopyOrMoveConstructor()) {
+  for (auto* decl : constructors_lookup) {
+    auto info = clang::getConstructorInfo(decl);
+    if (!info.Constructor || info.Constructor->isCopyOrMoveConstructor()) {
       continue;
     }
-    overload_set.addDecl(constructor, constructor->getAccess());
+    overload_set.addDecl(info.FoundDecl, info.FoundDecl->getAccess());
   }
   if (overload_set.empty()) {
     return SemIR::ScopeLookupResult::MakeNotFound();

toolchain/check/testdata/interop/cpp/class/constructor.carbon

@@ -106,28 +106,78 @@ fn F() {
 }
 
 // ============================================================================
-// No constructors
+// Constructor templates
 // ============================================================================
 
-// --- none.h
+// --- template.h
+
+class C {
+ public:
+  C(int);
+  template<typename T> C(T);
+};
+
+// --- import_template.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp library "template.h";
+
+fn F() {
+  //@dump-sem-ir-begin
+  var c1: Cpp.C = Cpp.C.C(123);
+  var c2: Cpp.C = Cpp.C.C(true);
+  var c3: Cpp.C = Cpp.C.C(&c1);
+  //@dump-sem-ir-end
+}
+
+// ============================================================================
+// Deleted constructor
+// ============================================================================
+
+// --- deleted.h
 
 class C {
  public:
   C() = delete;
 };
 
-// --- fail_import_none.carbon
+class D {
+ public:
+  D(int) = delete;
+  D(short);
+};
+
+// --- fail_import_deleted.carbon
 
 library "[[@TEST_NAME]]";
 
-import Cpp library "none.h";
+import Cpp library "deleted.h";
 
 fn F() {
-  // CHECK:STDERR: fail_import_none.carbon:[[@LINE+4]]:18: error: member name `C` not found in `Cpp.C` [MemberNameNotFoundInInstScope]
-  // CHECK:STDERR:   let c: Cpp.C = Cpp.C.C();
-  // CHECK:STDERR:                  ^~~~~~~
+  // CHECK:STDERR: fail_import_deleted.carbon:[[@LINE+8]]:26: error: call to deleted function 'C' [CppInteropParseError]
+  // CHECK:STDERR:    15 |   let c: Cpp.C = Cpp.C.C();
+  // CHECK:STDERR:       |                          ^
+  // CHECK:STDERR: fail_import_deleted.carbon:[[@LINE-6]]:10: in file included here [InCppInclude]
+  // CHECK:STDERR: ./deleted.h:4:3: note: candidate constructor has been explicitly deleted [CppInteropParseNote]
+  // CHECK:STDERR:     4 |   C() = delete;
+  // CHECK:STDERR:       |   ^
   // CHECK:STDERR:
   let c: Cpp.C = Cpp.C.C();
+
+  // CHECK:STDERR: fail_import_deleted.carbon:[[@LINE+12]]:27: error: call to deleted function 'D' [CppInteropParseError]
+  // CHECK:STDERR:    29 |   let d: Cpp.D = Cpp.D.D(0);
+  // CHECK:STDERR:       |                           ^
+  // CHECK:STDERR: fail_import_deleted.carbon:[[@LINE-16]]:10: in file included here [InCppInclude]
+  // CHECK:STDERR: ./deleted.h:9:3: note: candidate constructor has been explicitly deleted [CppInteropParseNote]
+  // CHECK:STDERR:     9 |   D(int) = delete;
+  // CHECK:STDERR:       |   ^
+  // CHECK:STDERR: fail_import_deleted.carbon:[[@LINE-20]]:10: in file included here [InCppInclude]
+  // CHECK:STDERR: ./deleted.h:10:3: note: candidate constructor [CppInteropParseNote]
+  // CHECK:STDERR:    10 |   D(short);
+  // CHECK:STDERR:       |   ^
+  // CHECK:STDERR:
+  let d: Cpp.D = Cpp.D.D(0);
 }
 
 // ============================================================================
@@ -646,6 +696,184 @@ fn F() {
 // CHECK:STDOUT:   <elided>
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
+// CHECK:STDOUT: --- import_template.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
+// CHECK:STDOUT:   %C: type = class_type @C [concrete]
+// CHECK:STDOUT:   %pattern_type.217: type = pattern_type %C [concrete]
+// CHECK:STDOUT:   %.d40: type = cpp_overload_set_type @C.C.1 [concrete]
+// CHECK:STDOUT:   %empty_struct: %.d40 = struct_value () [concrete]
+// CHECK:STDOUT:   %int_123.fff: Core.IntLiteral = int_value 123 [concrete]
+// CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete]
+// CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [concrete]
+// CHECK:STDOUT:   %ptr.d9e: type = ptr_type %C [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.type.65f120.1: type = fn_type @C__carbon_thunk.1 [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.d98342.1: %C__carbon_thunk.type.65f120.1 = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.type.d14: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
+// CHECK:STDOUT:   %ImplicitAs.Convert.type.1b6: type = fn_type @ImplicitAs.Convert, @ImplicitAs(%i32) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.340: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.ImplicitAs.impl.Convert.1c0: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.340 = struct_value () [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.impl_witness.204: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.9e9, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.584: 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.0f0: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.584 = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.facet: %ImplicitAs.type.d14 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.204) [concrete]
+// CHECK:STDOUT:   %.1df: type = fn_type_with_self_type %ImplicitAs.Convert.type.1b6, %ImplicitAs.facet [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound: <bound method> = bound_method %int_123.fff, %Core.IntLiteral.as.ImplicitAs.impl.Convert.0f0 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.0f0, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
+// CHECK:STDOUT:   %bound_method: <bound method> = bound_method %int_123.fff, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
+// CHECK:STDOUT:   %int_123.f7f: %i32 = int_value 123 [concrete]
+// CHECK:STDOUT:   %true: bool = bool_literal true [concrete]
+// CHECK:STDOUT:   %ptr.bb2: type = ptr_type bool [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.type.65f120.2: type = fn_type @C__carbon_thunk.2 [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.d98342.2: %C__carbon_thunk.type.65f120.2 = struct_value () [concrete]
+// CHECK:STDOUT:   %Copy.type: type = facet_type <@Copy> [concrete]
+// CHECK:STDOUT:   %Copy.Op.type: type = fn_type @Copy.Op [concrete]
+// CHECK:STDOUT:   %Copy.impl_witness.a56: <witness> = impl_witness imports.%Copy.impl_witness_table.189 [concrete]
+// CHECK:STDOUT:   %Copy.facet: %Copy.type = facet_value bool, (%Copy.impl_witness.a56) [concrete]
+// CHECK:STDOUT:   %.05c: type = fn_type_with_self_type %Copy.Op.type, %Copy.facet [concrete]
+// CHECK:STDOUT:   %bool.as.Copy.impl.Op.type: type = fn_type @bool.as.Copy.impl.Op [concrete]
+// CHECK:STDOUT:   %bool.as.Copy.impl.Op: %bool.as.Copy.impl.Op.type = struct_value () [concrete]
+// CHECK:STDOUT:   %bool.as.Copy.impl.Op.bound: <bound method> = bound_method %true, %bool.as.Copy.impl.Op [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.type.65f120.3: type = fn_type @C__carbon_thunk.3 [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.d98342.3: %C__carbon_thunk.type.65f120.3 = struct_value () [concrete]
+// CHECK:STDOUT:   %type_where: type = facet_type <type where .Self impls <CanAggregateDestroy>> [concrete]
+// CHECK:STDOUT:   %facet_value: %type_where = facet_value %C, () [concrete]
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.type.fc1: type = fn_type @AggregateT.as_type.as.Destroy.impl.Op, @AggregateT.as_type.as.Destroy.impl(%facet_value) [concrete]
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.6b9: %AggregateT.as_type.as.Destroy.impl.Op.type.fc1 = struct_value () [concrete]
+// CHECK:STDOUT:   %bool.as.Destroy.impl.Op.type: type = fn_type @bool.as.Destroy.impl.Op [concrete]
+// CHECK:STDOUT:   %bool.as.Destroy.impl.Op: %bool.as.Destroy.impl.Op.type = struct_value () [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
+// CHECK:STDOUT:     .C = %C.decl
+// CHECK:STDOUT:     import Cpp//...
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
+// CHECK:STDOUT:   %.40b: %.d40 = cpp_overload_set_value @C.C.1 [concrete = constants.%empty_struct]
+// CHECK:STDOUT:   %C__carbon_thunk.decl.8acdfe.1: %C__carbon_thunk.type.65f120.1 = fn_decl @C__carbon_thunk.1 [concrete = constants.%C__carbon_thunk.d98342.1] {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.ee7: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.340) = import_ref Core//prelude/parts/int, loc23_39, loaded [symbolic = @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert (constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.1c0)]
+// CHECK:STDOUT:   %ImplicitAs.impl_witness_table.9e9 = impl_witness_table (%Core.import_ref.ee7), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.decl.8acdfe.2: %C__carbon_thunk.type.65f120.2 = fn_decl @C__carbon_thunk.2 [concrete = constants.%C__carbon_thunk.d98342.2] {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.cc5: %bool.as.Copy.impl.Op.type = import_ref Core//prelude/parts/copy, loc20_31, loaded [concrete = constants.%bool.as.Copy.impl.Op]
+// CHECK:STDOUT:   %Copy.impl_witness_table.189 = impl_witness_table (%Core.import_ref.cc5), @bool.as.Copy.impl [concrete]
+// CHECK:STDOUT:   %C__carbon_thunk.decl.8acdfe.3: %C__carbon_thunk.type.65f120.3 = fn_decl @C__carbon_thunk.3 [concrete = constants.%C__carbon_thunk.d98342.3] {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %c1.patt: %pattern_type.217 = binding_pattern c1 [concrete]
+// CHECK:STDOUT:     %c1.var_patt: %pattern_type.217 = var_pattern %c1.patt [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c1.var: ref %C = var %c1.var_patt
+// CHECK:STDOUT:   %Cpp.ref.loc8_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:   %C.ref.loc8_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   %C.ref.loc8_24: %.d40 = name_ref C, imports.%.40b [concrete = constants.%empty_struct]
+// CHECK:STDOUT:   %int_123: Core.IntLiteral = int_value 123 [concrete = constants.%int_123.fff]
+// CHECK:STDOUT:   %.loc8_3.1: ref %C = splice_block %c1.var {}
+// CHECK:STDOUT:   %impl.elem0.loc8: %.1df = impl_witness_access constants.%ImplicitAs.impl_witness.204, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.0f0]
+// CHECK:STDOUT:   %bound_method.loc8_27.1: <bound method> = bound_method %int_123, %impl.elem0.loc8 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
+// CHECK:STDOUT:   %specific_fn: <specific function> = specific_function %impl.elem0.loc8, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
+// CHECK:STDOUT:   %bound_method.loc8_27.2: <bound method> = bound_method %int_123, %specific_fn [concrete = constants.%bound_method]
+// CHECK:STDOUT:   %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc8_27.2(%int_123) [concrete = constants.%int_123.f7f]
+// CHECK:STDOUT:   %.loc8_27.1: %i32 = value_of_initializer %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_123.f7f]
+// CHECK:STDOUT:   %.loc8_27.2: %i32 = converted %int_123, %.loc8_27.1 [concrete = constants.%int_123.f7f]
+// CHECK:STDOUT:   %addr.loc8_30: %ptr.d9e = addr_of %.loc8_3.1
+// CHECK:STDOUT:   %C__carbon_thunk.call.loc8: init %empty_tuple.type = call imports.%C__carbon_thunk.decl.8acdfe.1(%.loc8_27.2, %addr.loc8_30)
+// CHECK:STDOUT:   %.loc8_30: init %C = in_place_init %C__carbon_thunk.call.loc8, %.loc8_3.1
+// CHECK:STDOUT:   assign %c1.var, %.loc8_30
+// CHECK:STDOUT:   %.loc8_14: type = splice_block %C.ref.loc8_14 [concrete = constants.%C] {
+// CHECK:STDOUT:     %Cpp.ref.loc8_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     %C.ref.loc8_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c1: ref %C = bind_name c1, %c1.var
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %c2.patt: %pattern_type.217 = binding_pattern c2 [concrete]
+// CHECK:STDOUT:     %c2.var_patt: %pattern_type.217 = var_pattern %c2.patt [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c2.var: ref %C = var %c2.var_patt
+// CHECK:STDOUT:   %Cpp.ref.loc9_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:   %C.ref.loc9_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   %C.ref.loc9_24: %.d40 = name_ref C, imports.%.40b [concrete = constants.%empty_struct]
+// CHECK:STDOUT:   %true: bool = bool_literal true [concrete = constants.%true]
+// CHECK:STDOUT:   %.loc9_3.1: ref %C = splice_block %c2.var {}
+// CHECK:STDOUT:   %.loc9_27.1: ref bool = temporary_storage
+// CHECK:STDOUT:   %impl.elem0.loc9: %.05c = impl_witness_access constants.%Copy.impl_witness.a56, element0 [concrete = constants.%bool.as.Copy.impl.Op]
+// CHECK:STDOUT:   %bound_method.loc9_27: <bound method> = bound_method %true, %impl.elem0.loc9 [concrete = constants.%bool.as.Copy.impl.Op.bound]
+// CHECK:STDOUT:   %bool.as.Copy.impl.Op.call: init bool = call %bound_method.loc9_27(%true) [concrete = constants.%true]
+// CHECK:STDOUT:   %.loc9_27.2: ref bool = temporary %.loc9_27.1, %bool.as.Copy.impl.Op.call
+// CHECK:STDOUT:   %addr.loc9_31.1: %ptr.bb2 = addr_of %.loc9_27.2
+// CHECK:STDOUT:   %addr.loc9_31.2: %ptr.d9e = addr_of %.loc9_3.1
+// CHECK:STDOUT:   %C__carbon_thunk.call.loc9: init %empty_tuple.type = call imports.%C__carbon_thunk.decl.8acdfe.2(%addr.loc9_31.1, %addr.loc9_31.2)
+// CHECK:STDOUT:   %.loc9_31: init %C = in_place_init %C__carbon_thunk.call.loc9, %.loc9_3.1
+// CHECK:STDOUT:   assign %c2.var, %.loc9_31
+// CHECK:STDOUT:   %.loc9_14: type = splice_block %C.ref.loc9_14 [concrete = constants.%C] {
+// CHECK:STDOUT:     %Cpp.ref.loc9_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     %C.ref.loc9_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c2: ref %C = bind_name c2, %c2.var
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %c3.patt: %pattern_type.217 = binding_pattern c3 [concrete]
+// CHECK:STDOUT:     %c3.var_patt: %pattern_type.217 = var_pattern %c3.patt [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c3.var: ref %C = var %c3.var_patt
+// CHECK:STDOUT:   %Cpp.ref.loc10_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:   %C.ref.loc10_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   %C.ref.loc10_24: %.d40 = name_ref C, imports.%.40b [concrete = constants.%empty_struct]
+// CHECK:STDOUT:   %c1.ref: ref %C = name_ref c1, %c1
+// CHECK:STDOUT:   %addr.loc10_27: %ptr.d9e = addr_of %c1.ref
+// CHECK:STDOUT:   %.loc10_3.1: ref %C = splice_block %c3.var {}
+// CHECK:STDOUT:   %addr.loc10_30: %ptr.d9e = addr_of %.loc10_3.1
+// CHECK:STDOUT:   %C__carbon_thunk.call.loc10: init %empty_tuple.type = call imports.%C__carbon_thunk.decl.8acdfe.3(%addr.loc10_27, %addr.loc10_30)
+// CHECK:STDOUT:   %.loc10_30: init %C = in_place_init %C__carbon_thunk.call.loc10, %.loc10_3.1
+// CHECK:STDOUT:   assign %c3.var, %.loc10_30
+// CHECK:STDOUT:   %.loc10_14: type = splice_block %C.ref.loc10_14 [concrete = constants.%C] {
+// CHECK:STDOUT:     %Cpp.ref.loc10_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     %C.ref.loc10_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c3: ref %C = bind_name c3, %c3.var
+// CHECK:STDOUT:   %facet_value.loc10: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc10_3.2: %type_where = converted constants.%C, %facet_value.loc10 [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.bound.loc10: <bound method> = bound_method %c3.var, constants.%AggregateT.as_type.as.Destroy.impl.Op.6b9
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %bound_method.loc10: <bound method> = bound_method %c3.var, %AggregateT.as_type.as.Destroy.impl.Op.specific_fn.1
+// CHECK:STDOUT:   %addr.loc10_3: %ptr.d9e = addr_of %c3.var
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.call.loc10: init %empty_tuple.type = call %bound_method.loc10(%addr.loc10_3)
+// CHECK:STDOUT:   %bool.as.Destroy.impl.Op.bound: <bound method> = bound_method %.loc9_27.2, constants.%bool.as.Destroy.impl.Op
+// CHECK:STDOUT:   %addr.loc9_27: %ptr.bb2 = addr_of %.loc9_27.2
+// CHECK:STDOUT:   %bool.as.Destroy.impl.Op.call: init %empty_tuple.type = call %bool.as.Destroy.impl.Op.bound(%addr.loc9_27)
+// CHECK:STDOUT:   %facet_value.loc9: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc9_3.2: %type_where = converted constants.%C, %facet_value.loc9 [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.bound.loc9: <bound method> = bound_method %c2.var, constants.%AggregateT.as_type.as.Destroy.impl.Op.6b9
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %bound_method.loc9_3: <bound method> = bound_method %c2.var, %AggregateT.as_type.as.Destroy.impl.Op.specific_fn.2
+// CHECK:STDOUT:   %addr.loc9_3: %ptr.d9e = addr_of %c2.var
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.call.loc9: init %empty_tuple.type = call %bound_method.loc9_3(%addr.loc9_3)
+// CHECK:STDOUT:   %facet_value.loc8: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc8_3.2: %type_where = converted constants.%C, %facet_value.loc8 [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.bound.loc8: <bound method> = bound_method %c1.var, constants.%AggregateT.as_type.as.Destroy.impl.Op.6b9
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %bound_method.loc8_3: <bound method> = bound_method %c1.var, %AggregateT.as_type.as.Destroy.impl.Op.specific_fn.3
+// CHECK:STDOUT:   %addr.loc8_3: %ptr.d9e = addr_of %c1.var
+// CHECK:STDOUT:   %AggregateT.as_type.as.Destroy.impl.Op.call.loc8: init %empty_tuple.type = call %bound_method.loc8_3(%addr.loc8_3)
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
 // CHECK:STDOUT: --- fail_todo_import_implicit_single_argument.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {