3 people 05ea0e77d9 Map structs and tuples to initializer lists in C++ overload resolution. (#6620) ...

When performing C++ overload resolution with an argument that is of
Carbon struct or tuple type, form a braced initializer list as the
placeholder argument. Note that this only affects overload resolution;
no new support for actually converting structs or tuples to C++ types is
added. In particular, while this does allow an empty class to be
initialized from `{}`, it does not allow a non-empty C++ class to be
initialized from a struct, as that is not yet supported in general.

---------

Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
Co-authored-by: Geoff Romer <gromer@google.com>

2026-01-21 19:10:10 +00:00

..

cpp

Map structs and tuples to initializer lists in C++ overload resolution. (#6620)

2026-01-21 19:10:10 +00:00

fuzzer_corpus

Change array syntax from [T; N] to array(T, N) (#4981)

2025-02-20 22:42:47 +00:00

testdata

Map structs and tuples to initializer lists in C++ overload resolution. (#6620)

2026-01-21 19:10:10 +00:00

action.cpp

Clean up singleton TypeId use (#6300)

2025-10-30 22:50:59 +00:00

action.h

Even more usage of TypeInstId (#5296)

2025-04-11 21:47:43 +00:00

BUILD

Perform Clang IRGen during check (#6569)

2026-01-14 00:54:37 +00:00

call.cpp

Remove some uses of ReturnTypeInfo (#6577)

2026-01-13 17:23:27 +00:00

call.h

Model ref tags as insts instead of annotations (#6541)

2026-01-05 22:24:47 +00:00

check_fuzzer.cpp

Switch Driver back to parameters for construction (#4849)

2025-01-27 23:48:44 +00:00

check_unit.cpp

Use lines instead of statements for readability-function-size clang-tidy (#6594)

2026-01-14 19:32:03 +00:00

check_unit.h

Use lines instead of statements for readability-function-size clang-tidy (#6594)

2026-01-14 19:32:03 +00:00

check.cpp

Perform Clang IRGen during check (#6569)

2026-01-14 00:54:37 +00:00

check.h

Perform Clang IRGen during check (#6569)

2026-01-14 00:54:37 +00:00

class.cpp

Mark Check::Context::insts() as const and use it in more use cases (#6093)

2025-09-18 13:04:18 +00:00

class.h

Vtable support for generics (#5793)

2025-07-11 22:29:10 +00:00

context.cpp

Make IdTag typesafe (#6574)

2026-01-13 22:44:38 +00:00

context.h

Expose C++ reference returns as Carbon reference returns (#6618)

2026-01-16 18:08:42 +00:00

control_flow.cpp

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

control_flow.h

Handle destruction for return statements (#5785)

2025-07-10 16:32:39 +00:00

convert.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

convert.h

Give ReturnExpr a target only when initialization is in-place (#6570)

2026-01-13 01:20:15 +00:00

core_identifier.cpp

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

core_identifier.def

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

core_identifier.h

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

custom_witness.cpp

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

custom_witness.h

Change Destroy to use a CustomWitness instead of a blanket impl (#6512)

2025-12-19 18:36:06 +00:00

decl_introducer_state.h

Allow extend final impl as for impl declarations (#5345)

2025-04-23 15:20:18 +00:00

decl_name_stack.cpp

Defer building thunks until the end of the enclosing definition. (#5403)

2025-05-07 22:20:39 +00:00

decl_name_stack.h

Defer building thunks until the end of the enclosing definition. (#5403)

2025-05-07 22:20:39 +00:00

deduce.cpp

Finish renaming BindName and related insts. (#6281)

2025-10-28 17:17:38 +00:00

deduce.h

Fearlessly hold references into ValueStore again (#5589)

2025-06-03 18:07:23 +00:00

deferred_definition_worklist.cpp

Track pending thunks on the deferred definition worklist. (#5609)

2025-06-10 22:09:31 +00:00

deferred_definition_worklist.h

Track pending thunks on the deferred definition worklist. (#5609)

2025-06-10 22:09:31 +00:00

diagnostic_emitter.cpp

Check required implementations when an enclosing interface is implemented (#6522)

2026-01-07 17:05:41 +00:00

diagnostic_emitter.h

Expand use of CheckIRId stores (#5820)

2025-07-21 20:02:27 +00:00

diagnostic_helpers.h

Use explicit(false) for implicit construction (#6039)

2025-09-10 13:47:59 +00:00

dump.cpp

Add lldb dumping for RequireImplsId and RequireImplsBlockId (#6524)

2025-12-19 18:48:20 +00:00

eval_inst.cpp

Fix lowering of imported global variables. (#6567)

2026-01-11 19:22:43 +00:00

eval_inst.h

Use inline constexpr where appropriate. (#6374)

2025-11-14 13:50:56 +00:00

eval.cpp

Allow conversion between T* and Cpp.void*. (#6575)

2026-01-12 16:32:15 +00:00

eval.h

Remove the SemIRLoc typedef (#5299)

2025-04-14 14:28:15 +00:00

facet_type.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

facet_type.h

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

full_pattern_stack.h

Allocate CallParamIndexes eagerly (#6540)

2026-01-05 19:38:52 +00:00

function.cpp

Remove some uses of ReturnTypeInfo (#6577)

2026-01-13 17:23:27 +00:00

function.h

Remove some uses of ReturnTypeInfo (#6577)

2026-01-13 17:23:27 +00:00

generic_region_stack.cpp

Build generic eval blocks incrementally (#5313)

2025-05-01 20:24:15 +00:00

generic_region_stack.h

Build generic eval blocks incrementally (#5313)

2025-05-01 20:24:15 +00:00

generic.cpp

Add Inst::IsOneOf to check if an inst is one of a few kinds (#6523)

2026-01-07 21:41:05 +00:00

generic.h

Initial support for empty named constraints (#6245)

2025-10-22 18:26:32 +00:00

global_init.cpp

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

global_init.h

Split global init out from InstBlockStack. (#4101)

2024-07-03 17:49:47 +00:00

handle_alias.cpp

Finish renaming BindName and related insts. (#6281)

2025-10-28 17:17:38 +00:00

handle_array.cpp

Construct LocId from InstId directly (explicitly) instead of doing lookups when possible (#5355)

2025-04-28 19:06:24 +00:00

handle_binding_pattern.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

handle_call_expr.cpp

Parse ref as operator (#6539)

2025-12-30 19:18:34 +00:00

handle_choice.cpp

Use the value representation of T as that of MaybeUnformed(T) where possible (#6334)

2025-11-07 16:25:27 +00:00

handle_class.cpp

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

handle_codeblock.cpp

Detect control flow in entities nested inside functions (#5336)

2025-04-23 19:03:53 +00:00

handle_export.cpp

Construct LocId from InstId directly (explicitly) instead of doing lookups when possible (#5355)

2025-04-28 19:06:24 +00:00

handle_expr_statement.cpp

Convert discarded calls in thunks. (#5452)

2025-05-09 16:35:28 +00:00

handle_file.cpp

Rename check handlers to HandleParseNode overloads. (#4121)

2024-07-12 22:38:06 +00:00

handle_function.cpp

[parse] Implement initial parsing support for Lambda expressions (#6583)

2026-01-14 16:58:15 +00:00

handle_if_expr.cpp

Detect control flow in entities nested inside functions (#5336)

2025-04-23 19:03:53 +00:00

handle_if_statement.cpp

Refactor AddInst-family functions to their own file (#4941)

2025-02-14 19:44:36 +00:00

handle_impl.cpp

Avoid cyclic lookup of an impl inside its own definition (#6629)

2026-01-20 19:28:46 +00:00

handle_import_and_package.cpp

Formalize Cpp as a PackageNameId (#6306)

2025-11-05 17:21:41 +00:00

handle_index.cpp

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

handle_interface.cpp

Add require decls to Interface and NamedConstraint (#6321)

2025-11-11 16:36:15 +00:00

handle_lambda.cpp

[parse] Implement initial parsing support for Lambda expressions (#6583)

2026-01-14 16:58:15 +00:00

handle_let_and_var.cpp

Allocate CallParamIndexes eagerly (#6540)

2026-01-05 19:38:52 +00:00

handle_literal.cpp

Add interop support for naming and "calling" C++ templates. (#6474)

2025-12-15 17:45:01 +00:00

handle_loop_statement.cpp

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

handle_match.cpp

Rename check handlers to HandleParseNode overloads. (#4121)

2024-07-12 22:38:06 +00:00

handle_modifier.cpp

Allow extend final impl as for impl declarations (#5345)

2025-04-23 15:20:18 +00:00

handle_name.cpp

Change the package namespace to use the package name (#6495)

2025-12-16 01:33:53 +00:00

handle_named_constraint.cpp

Add require decls to Interface and NamedConstraint (#6321)

2025-11-11 16:36:15 +00:00

handle_namespace.cpp

Construct LocId from InstId directly (explicitly) instead of doing lookups when possible (#5355)

2025-04-28 19:06:24 +00:00

handle_noop.cpp

Abort checking when encountering an invalid parse node (#4700)

2024-12-18 00:19:12 +00:00

handle_operator.cpp

Model ref tags as insts instead of annotations (#6541)

2026-01-05 22:24:47 +00:00

handle_paren_expr.cpp

Rename check handlers to HandleParseNode overloads. (#4121)

2024-07-12 22:38:06 +00:00

handle_pattern_list.cpp

Decouple associated constants from let (#5973)

2025-09-02 23:15:26 +00:00

handle_require.cpp

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

handle_return_statement.cpp

Rename check handlers to HandleParseNode overloads. (#4121)

2024-07-12 22:38:06 +00:00

handle_struct.cpp

Switch zip to zip_equal where possible (#6389)

2025-11-18 00:28:06 +00:00

handle_tuple_literal.cpp

Remove all remaining uses of TypeIds as instruction operands. (#5280)

2025-04-10 20:53:42 +00:00

handle_where.cpp

Use the new IsFacetTypeOrError function (#6438)

2025-12-02 22:33:55 +00:00

handle.h

Track pending thunks on the deferred definition worklist. (#5609)

2025-06-10 22:09:31 +00:00

impl_lookup.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

impl_lookup.h

Cache final impl lookup results. (#6452)

2025-12-02 22:51:25 +00:00

impl_validation.cpp

Check the orphan rule for impls (#6488)

2025-12-11 19:44:39 +00:00

impl_validation.h

Add diagnostics for invalid impl declarations (#5420)

2025-05-22 18:58:47 +00:00

impl.cpp

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

impl.h

Avoid cyclic lookup of an impl inside its own definition (#6629)

2026-01-20 19:28:46 +00:00

import_ref.cpp

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

import_ref.h

When performing an impl lookup, only import impls for related interfaces. (#6040)

2025-09-10 21:40:27 +00:00

import.cpp

Refactor addition of imported locations and placeholders (#6354)

2025-11-13 18:34:13 +00:00

import.h

Refactor addition of imported locations and placeholders (#6354)

2025-11-13 18:34:13 +00:00

inst_block_stack.cpp

Refactor InstBlockStore's API, AddDefaultValue -> AddPlaceholder (#5166)

2025-03-21 23:09:37 +00:00

inst_block_stack.h

Add require decls to Interface and NamedConstraint (#6321)

2025-11-11 16:36:15 +00:00

inst.cpp

Refactor addition of imported locations and placeholders (#6354)

2025-11-13 18:34:13 +00:00

inst.h

Refactor addition of imported locations and placeholders (#6354)

2025-11-13 18:34:13 +00:00

interface.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

interface.h

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

keyword_modifier_set.cpp

Some more edits to EnumBase and EnumMaskBase (#6054)

2025-09-12 22:59:37 +00:00

keyword_modifier_set.h

Use inline constexpr where appropriate. (#6374)

2025-11-14 13:50:56 +00:00

lexical_lookup.h

Set an explicit size for lexical lookup's vector (#5786)

2025-07-09 22:42:27 +00:00

literal.cpp

Add interop support for naming and "calling" C++ templates. (#6474)

2025-12-15 17:45:01 +00:00

literal.h

Add interop support for naming and "calling" C++ templates. (#6474)

2025-12-15 17:45:01 +00:00

member_access.cpp

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

member_access.h

Implement support for mixed-access overload sets. (#6137)

2025-09-26 23:18:16 +00:00

merge.cpp

Remove support for addr (#6375)

2025-11-18 19:48:58 +00:00

merge.h

Initial support for empty named constraints (#6245)

2025-10-22 18:26:32 +00:00

modifiers.cpp

Construct LocId from InstId directly (explicitly) instead of doing lookups when possible (#5355)

2025-04-28 19:06:24 +00:00

modifiers.h

Refactor modifier formatting to remove string passing. (#4418)

2024-10-17 22:47:40 +00:00

name_component.cpp

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

name_component.h

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

name_lookup.cpp

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

name_lookup.h

Extended name lookup replaces inner Self (#6632)

2026-01-21 17:48:18 +00:00

name_ref.cpp

Fix lowering of thunks in generic impls (#5631)

2025-06-10 20:54:58 +00:00

name_ref.h

Fix lowering of thunks in generic impls (#5631)

2025-06-10 20:54:58 +00:00

name_scope.cpp

Diagnose explicit Self in extend in the parse node handler (Refactor Impl construction 1/7) (#6465)

2025-12-09 20:38:50 +00:00

name_scope.h

Diagnose explicit Self in extend in the parse node handler (Refactor Impl construction 1/7) (#6465)

2025-12-09 20:38:50 +00:00

node_id_traversal.cpp

Track pending thunks on the deferred definition worklist. (#5609)

2025-06-10 22:09:31 +00:00

node_id_traversal.h

Track pending thunks on the deferred definition worklist. (#5609)

2025-06-10 22:09:31 +00:00

node_stack.cpp

Use lines instead of statements for readability-function-size clang-tidy (#6594)

2026-01-14 19:32:03 +00:00

node_stack.h

[parse] Implement initial parsing support for Lambda expressions (#6583)

2026-01-14 16:58:15 +00:00

operator.cpp

Model ref tags as insts instead of annotations (#6541)

2026-01-05 22:24:47 +00:00

operator.h

Add well-known identifier caching (#6486)

2025-12-11 21:41:47 +00:00

param_and_arg_refs_stack.h

Consolidate post-check logic (#5003)

2025-02-25 02:07:43 +00:00

pattern_match.cpp

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

pattern_match.h

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

pattern.cpp

Replace GetCurrentReturnSlot with GetReturnedVarParam (#6571)

2026-01-10 01:56:32 +00:00

pattern.h

Import C++ ref parameters as ref parameters (#6360)

2025-11-13 17:04:58 +00:00

pending_block.h

Don't treat dependent types as having a copy value representation. (#6055)

2025-09-15 23:59:00 +00:00

pointer_dereference.cpp

Generate thunks for functions in impls (#5390)

2025-05-01 22:17:55 +00:00

pointer_dereference.h

Generate thunks for functions in impls (#5390)

2025-05-01 22:17:55 +00:00

region_stack.h

Remove the SemIRLoc typedef (#5299)

2025-04-14 14:28:15 +00:00

require_impls.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

require_impls.h

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

return.cpp

Remove some uses of ReturnTypeInfo (#6577)

2026-01-13 17:23:27 +00:00

return.h

Replace GetCurrentReturnSlot with GetReturnedVarParam (#6571)

2026-01-10 01:56:32 +00:00

scope_index.h

Use inline constexpr where appropriate. (#6374)

2025-11-14 13:50:56 +00:00

scope_stack.cpp

Defer building thunks until the end of the enclosing definition. (#5403)

2025-05-07 22:20:39 +00:00

scope_stack.h

Drop fn destroy support (#6136)

2025-09-25 21:56:48 +00:00

subst.cpp

Change Destroy to use a CustomWitness instead of a blanket impl (#6512)

2025-12-19 18:36:06 +00:00

subst.h

Finish renaming BindName and related insts. (#6281)

2025-10-28 17:17:38 +00:00

thunk.cpp

Add Call param patterns to Function (#6586)

2026-01-13 19:30:15 +00:00

thunk.h

Implement support for copying C++ classes. (#6434)

2025-12-02 02:52:23 +00:00

type_completion.cpp

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

type_completion.h

Make identifying a facet type an operation on a (self+facet type) pair (#6592)

2026-01-14 17:34:56 +00:00

type_structure.cpp

Return SymbolicBindingType separately in TypeIterator (#6193)

2025-10-10 12:37:37 +00:00

type_structure.h

Prevent accidental copies of TypeStructure (#6519)

2025-12-18 17:26:28 +00:00

type.cpp

Add interop support for naming and "calling" C++ templates. (#6474)

2025-12-15 17:45:01 +00:00

type.h

Add interop support for naming and "calling" C++ templates. (#6474)

2025-12-15 17:45:01 +00:00