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carbon-lang/toolchain/check/testdata/impl/fail_extend_impl_forall.carbon
T
Chandler Carruth 2c9739799b Render diagnostics through the terminal library (#7683) 
Diagnostic rendering was part of the data model: `Loc::FormatLocation`
and
`Loc::FormatSnippet` wrote plain text to a stream, so no capability,
color, or
terminal width could reach them.

A diagnostic is now one message with labels, contexts, and location
information
attached, and `Diagnostics::Renderer` draws it into a
`Terminal::Buffer`. The
design is in `toolchain/docs/diagnostics_rendering.md` (#7668),
authoring in
`toolchain/docs/diagnostics.md`.

Before:

```
example.carbon:6:3: error: 1 argument passed to function expecting 0 arguments
  Run0(1);
  ^~~~~~~
example.carbon:3:1: note: calling function declared here
fn Run0() {}
^~~~~~~~~~~
```

After:

```
error: 1 argument passed to function expecting 0 arguments
       ╭─┤ example.carbon:6:3
       ┆
     3 │ fn Run0() {}
       · ─────┬─────
       ·      ╰──┤ calling function declared here
       ┆
->   6 │   Run0(1);
       ·   ───────
       ╰────────────
```

`--no-diagnostic-snippets` gives a compact form, `example.carbon:6:3-9`.
File
tests use it; the rendering tests under `toolchain/diagnostics/testdata`
ask for
snippets.

C++ interop diagnostics are data now rather than text Clang drew:
`SemIR::ClangSourceLocId` names a `clang::SourceRange`, and a Clang
location is
marked as the point it names.

`StreamConsumer` moves to a `:renderer` target that `:emitter` does not
depend
on, keeping `common/terminal` out of `consumer.h`. Capabilities come
from the
file behind the error stream, so tests get plain ASCII.

`renderer_fuzzer` draws diagnostics built from fuzzer bytes with every
capability combination, since a shape the renderer doesn't expect must
never be
why the compiler dies while reporting a problem.

TODOs mark the follow-ups: line weights and crossing lines, wrapping
that keeps
a quoted type whole, and ordering diagnostics that share a byte offset.

Also: `IncorrectExtension`'s hint moves into its message, since its note
had no
location of its own, and `strip_noise` in `check_diagnostics.py` blanks
multi-line `#define`s instead of deleting them.

Assisted-by: Claude Code
2026-10-15 06:08:57 +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/none.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/fail_extend_impl_forall.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/fail_extend_impl_forall.carbon
interface GenericInterface(T: type) {
fn F(x: T);
}
class C {
// CHECK:STDERR: fail_extend_impl_forall.carbon:[[@LINE+2]]:3-8: error: cannot `extend` a parameterized `impl` [ExtendImplForall]
// CHECK:STDERR:
extend impl forall [T: type] as GenericInterface(T) {
fn F(unused x: T) {}
}
}
// CHECK:STDOUT: --- fail_extend_impl_forall.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self.frozen: type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %pattern_type.9a5: type = pattern_type type [concrete]
// CHECK:STDOUT: %T.patt: %pattern_type.9a5 = symbolic_binding_pattern T, 0 [symbolic]
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %GenericInterface.type.26e: type = generic_interface_type @GenericInterface [concrete]
// CHECK:STDOUT: %GenericInterface.generic: %GenericInterface.type.26e = struct_value () [concrete]
// CHECK:STDOUT: %GenericInterface.type.076: type = facet_type <@GenericInterface, @GenericInterface(%T)> [symbolic]
// CHECK:STDOUT: %Self: %GenericInterface.type.076 = symbolic_binding Self, 1 [symbolic]
// CHECK:STDOUT: %pattern_type.51d: type = pattern_type %T [symbolic]
// CHECK:STDOUT: %x.param_patt: %pattern_type.51d = value_param_pattern [symbolic]
// CHECK:STDOUT: %x.patt: %pattern_type.51d = wrapper_binding_pattern x, %x.param_patt [symbolic]
// CHECK:STDOUT: %GenericInterface.WithSelf.F.type: type = fn_type @GenericInterface.WithSelf.F, @GenericInterface.WithSelf(%T, %Self) [symbolic]
// CHECK:STDOUT: %GenericInterface.WithSelf.F: %GenericInterface.WithSelf.F.type = struct_value () [symbolic]
// CHECK:STDOUT: %GenericInterface.assoc_type: type = assoc_entity_type @GenericInterface, @GenericInterface(%T) [symbolic]
// CHECK:STDOUT: %assoc0: %GenericInterface.assoc_type = assoc_entity element0, @GenericInterface.WithSelf.%GenericInterface.WithSelf.F.decl [symbolic]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %.c61: <witness> = impl_self_witness %C, @GenericInterface, @GenericInterface(%T) [symbolic]
// CHECK:STDOUT: %GenericInterface.impl_witness: <witness> = impl_witness @C.as.GenericInterface.impl.%GenericInterface.impl_witness_table, @C.as.GenericInterface.impl(%T) [symbolic]
// CHECK:STDOUT: %C.as.GenericInterface.impl.F.type: type = fn_type @C.as.GenericInterface.impl.F, @C.as.GenericInterface.impl(%T) [symbolic]
// CHECK:STDOUT: %C.as.GenericInterface.impl.F: %C.as.GenericInterface.impl.F.type = struct_value () [symbolic]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %T [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .GenericInterface = %GenericInterface.decl
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %GenericInterface.decl: %GenericInterface.type.26e = interface_decl @GenericInterface [concrete = constants.%GenericInterface.generic] {
// CHECK:STDOUT: %T.patt.loc15_29.1: %pattern_type.9a5 = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc15_29.2 (constants.%T.patt)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc15_31.1: type = splice_block %.loc15_31.2 [concrete = type] {
// CHECK:STDOUT: %.Self.frozen: type = symbolic_binding .Self [symbolic_self = constants.%.Self.frozen]
// CHECK:STDOUT: %.loc15_31.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc15_29.2: type = symbolic_binding T, 0 [symbolic = %T.loc15_29.1 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic interface @GenericInterface(%T.loc15_29.2: type) {
// CHECK:STDOUT: %T.patt.loc15_29.2: %pattern_type.9a5 = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc15_29.2 (constants.%T.patt)]
// CHECK:STDOUT: %T.loc15_29.1: type = symbolic_binding T, 0 [symbolic = %T.loc15_29.1 (constants.%T)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %GenericInterface.type: type = facet_type <@GenericInterface, @GenericInterface(%T.loc15_29.1)> [symbolic = %GenericInterface.type (constants.%GenericInterface.type.076)]
// CHECK:STDOUT: %Self.loc15_37.2: @GenericInterface.%GenericInterface.type (%GenericInterface.type.076) = symbolic_binding Self, 1 [symbolic = %Self.loc15_37.2 (constants.%Self)]
// CHECK:STDOUT:
// CHECK:STDOUT: interface {
// CHECK:STDOUT: %Self.loc15_37.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.076) = symbolic_binding Self, 1 [symbolic = %Self.loc15_37.2 (constants.%Self)]
// CHECK:STDOUT: %GenericInterface.WithSelf.decl = interface_with_self_decl @GenericInterface [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !with Self:
// CHECK:STDOUT: %GenericInterface.WithSelf.F.decl: @GenericInterface.WithSelf.%GenericInterface.WithSelf.F.type (%GenericInterface.WithSelf.F.type) = fn_decl @GenericInterface.WithSelf.F [symbolic = @GenericInterface.WithSelf.%GenericInterface.WithSelf.F (constants.%GenericInterface.WithSelf.F)] {
// CHECK:STDOUT: %x.param_patt.loc16_9.1: @GenericInterface.WithSelf.F.%pattern_type (%pattern_type.51d) = value_param_pattern [symbolic = %x.param_patt.loc16_9.2 (constants.%x.param_patt)]
// CHECK:STDOUT: %x.patt.loc16_9.1: @GenericInterface.WithSelf.F.%pattern_type (%pattern_type.51d) = wrapper_binding_pattern x, %x.param_patt.loc16_9.1 [symbolic = %x.patt.loc16_9.2 (constants.%x.patt)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %x.param: @GenericInterface.WithSelf.F.%T (%T) = value_param call_param0
// CHECK:STDOUT: %.loc16_11.1: type = splice_block %T.ref [symbolic = %T (constants.%T)] {
// CHECK:STDOUT: %.loc16_11.2: type = specific_constant @GenericInterface.%T.loc15_29.2, @GenericInterface(constants.%T) [symbolic = %T (constants.%T)]
// CHECK:STDOUT: %T.ref: type = name_ref T, %.loc16_11.2 [symbolic = %T (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %x: @GenericInterface.WithSelf.F.%T (%T) = wrapper_binding x, %x.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %assoc0.loc16_13.1: @GenericInterface.WithSelf.%GenericInterface.assoc_type (%GenericInterface.assoc_type) = assoc_entity element0, %GenericInterface.WithSelf.F.decl [symbolic = %assoc0.loc16_13.2 (constants.%assoc0)]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self.loc15_37.1
// CHECK:STDOUT: .T = <poisoned>
// CHECK:STDOUT: .T = <poisoned>
// CHECK:STDOUT: .F = @GenericInterface.WithSelf.%assoc0.loc16_13.1
// CHECK:STDOUT: witness = (@GenericInterface.WithSelf.%GenericInterface.WithSelf.F.decl)
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @C.as.GenericInterface.impl(%T.loc22_24.2: type) {
// CHECK:STDOUT: %T.patt.loc22_24.2: %pattern_type.9a5 = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc22_24.2 (constants.%T.patt)]
// CHECK:STDOUT: %T.loc22_24.1: type = symbolic_binding T, 0 [symbolic = %T.loc22_24.1 (constants.%T)]
// CHECK:STDOUT: %GenericInterface.type.loc22_53.1: type = facet_type <@GenericInterface, @GenericInterface(%T.loc22_24.1)> [symbolic = %GenericInterface.type.loc22_53.1 (constants.%GenericInterface.type.076)]
// CHECK:STDOUT: %.loc22_55: <witness> = impl_self_witness constants.%C, @GenericInterface, @GenericInterface(%T.loc22_24.1) [symbolic = %.loc22_55 (constants.%.c61)]
// CHECK:STDOUT: %GenericInterface.impl_witness.loc22_55.2: <witness> = impl_witness %GenericInterface.impl_witness_table, @C.as.GenericInterface.impl(%T.loc22_24.1) [symbolic = %GenericInterface.impl_witness.loc22_55.2 (constants.%GenericInterface.impl_witness)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %C.as.GenericInterface.impl.F.type: type = fn_type @C.as.GenericInterface.impl.F, @C.as.GenericInterface.impl(%T.loc22_24.1) [symbolic = %C.as.GenericInterface.impl.F.type (constants.%C.as.GenericInterface.impl.F.type)]
// CHECK:STDOUT: %C.as.GenericInterface.impl.F: @C.as.GenericInterface.impl.%C.as.GenericInterface.impl.F.type (%C.as.GenericInterface.impl.F.type) = struct_value () [symbolic = %C.as.GenericInterface.impl.F (constants.%C.as.GenericInterface.impl.F)]
// CHECK:STDOUT:
// CHECK:STDOUT: impl: %Self.ref as %GenericInterface.type.loc22_53.2 {
// CHECK:STDOUT: %C.as.GenericInterface.impl.F.decl: @C.as.GenericInterface.impl.%C.as.GenericInterface.impl.F.type (%C.as.GenericInterface.impl.F.type) = fn_decl @C.as.GenericInterface.impl.F [symbolic = @C.as.GenericInterface.impl.%C.as.GenericInterface.impl.F (constants.%C.as.GenericInterface.impl.F)] {
// CHECK:STDOUT: %x.param_patt.loc23_18.1: @C.as.GenericInterface.impl.F.%pattern_type (%pattern_type.51d) = value_param_pattern [symbolic = %x.param_patt.loc23_18.2 (constants.%x.param_patt)]
// CHECK:STDOUT: %x.patt.loc23_18.1: @C.as.GenericInterface.impl.F.%pattern_type (%pattern_type.51d) = wrapper_binding_pattern x, %x.param_patt.loc23_18.1 [symbolic = %x.patt.loc23_18.2 (constants.%x.patt)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %x.param: @C.as.GenericInterface.impl.F.%T (%T) = value_param call_param0
// CHECK:STDOUT: %.loc23_20.1: type = splice_block %T.ref [symbolic = %T (constants.%T)] {
// CHECK:STDOUT: %.loc23_20.2: type = specific_constant @C.as.GenericInterface.impl.%T.loc22_24.2, @C.as.GenericInterface.impl(constants.%T) [symbolic = %T (constants.%T)]
// CHECK:STDOUT: %T.ref: type = name_ref T, %.loc23_20.2 [symbolic = %T (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %x: @C.as.GenericInterface.impl.F.%T (%T) = wrapper_binding x, %x.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %GenericInterface.impl_witness_table = impl_witness_table (), @C.as.GenericInterface.impl [concrete]
// CHECK:STDOUT: %GenericInterface.impl_witness.loc22_55.1: <witness> = impl_witness %GenericInterface.impl_witness_table, @C.as.GenericInterface.impl(constants.%T) [symbolic = %GenericInterface.impl_witness.loc22_55.2 (constants.%GenericInterface.impl_witness)]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .T = <poisoned>
// CHECK:STDOUT: .F = %C.as.GenericInterface.impl.F.decl
// CHECK:STDOUT: extend %GenericInterface.type.loc22_53.2
// CHECK:STDOUT: witness = <error>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: impl_decl @C.as.GenericInterface.impl [concrete] {
// CHECK:STDOUT: %T.patt.loc22_24.1: %pattern_type.9a5 = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc22_24.2 (constants.%T.patt)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%C [concrete = constants.%C]
// CHECK:STDOUT: %GenericInterface.ref: %GenericInterface.type.26e = name_ref GenericInterface, file.%GenericInterface.decl [concrete = constants.%GenericInterface.generic]
// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc22_24.2 [symbolic = %T.loc22_24.1 (constants.%T)]
// CHECK:STDOUT: %GenericInterface.type.loc22_53.2: type = facet_type <@GenericInterface, @GenericInterface(constants.%T)> [symbolic = %GenericInterface.type.loc22_53.1 (constants.%GenericInterface.type.076)]
// CHECK:STDOUT: %.loc22_26.1: type = splice_block %.loc22_26.2 [concrete = type] {
// CHECK:STDOUT: %.Self.frozen: type = symbolic_binding .Self [symbolic_self = constants.%.Self.frozen]
// CHECK:STDOUT: %.loc22_26.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc22_24.2: type = symbolic_binding T, 0 [symbolic = %T.loc22_24.1 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc22: <witness> = impl_self_witness @C.as.GenericInterface.impl.%Self.ref, @GenericInterface, @GenericInterface(constants.%T) [symbolic = @C.as.GenericInterface.impl.%.loc22_55 (constants.%.c61)]
// 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: .GenericInterface = <poisoned>
// CHECK:STDOUT: has_error
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @GenericInterface.WithSelf.F(@GenericInterface.%T.loc15_29.2: type, @GenericInterface.%Self.loc15_37.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.076)) {
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %T [symbolic = %pattern_type (constants.%pattern_type.51d)]
// CHECK:STDOUT: %x.param_patt.loc16_9.2: @GenericInterface.WithSelf.F.%pattern_type (%pattern_type.51d) = value_param_pattern [symbolic = %x.param_patt.loc16_9.2 (constants.%x.param_patt)]
// CHECK:STDOUT: %x.patt.loc16_9.2: @GenericInterface.WithSelf.F.%pattern_type (%pattern_type.51d) = wrapper_binding_pattern x, %x.param_patt.loc16_9.2 [symbolic = %x.patt.loc16_9.2 (constants.%x.patt)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%x.param: @GenericInterface.WithSelf.F.%T (%T));
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @C.as.GenericInterface.impl.F(@C.as.GenericInterface.impl.%T.loc22_24.2: type) {
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %T [symbolic = %pattern_type (constants.%pattern_type.51d)]
// CHECK:STDOUT: %x.param_patt.loc23_18.2: @C.as.GenericInterface.impl.F.%pattern_type (%pattern_type.51d) = value_param_pattern [symbolic = %x.param_patt.loc23_18.2 (constants.%x.param_patt)]
// CHECK:STDOUT: %x.patt.loc23_18.2: @C.as.GenericInterface.impl.F.%pattern_type (%pattern_type.51d) = wrapper_binding_pattern x, %x.param_patt.loc23_18.2 [symbolic = %x.patt.loc23_18.2 (constants.%x.patt)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %T [symbolic = %require_complete (constants.%require_complete)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%x.param: @C.as.GenericInterface.impl.F.%T (%T)) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @GenericInterface(constants.%T) {
// CHECK:STDOUT: %T.patt.loc15_29.2 => constants.%T.patt
// CHECK:STDOUT: %T.loc15_29.1 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @GenericInterface.WithSelf(constants.%T, constants.%Self) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %T => constants.%T
// CHECK:STDOUT: %GenericInterface.type => constants.%GenericInterface.type.076
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %GenericInterface.WithSelf.F.type => constants.%GenericInterface.WithSelf.F.type
// CHECK:STDOUT: %GenericInterface.WithSelf.F => constants.%GenericInterface.WithSelf.F
// CHECK:STDOUT: %GenericInterface.assoc_type => constants.%GenericInterface.assoc_type
// CHECK:STDOUT: %assoc0.loc16_13.2 => constants.%assoc0
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @GenericInterface.WithSelf.F(constants.%T, constants.%Self) {
// CHECK:STDOUT: %T => constants.%T
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.51d
// CHECK:STDOUT: %x.param_patt.loc16_9.2 => constants.%x.param_patt
// CHECK:STDOUT: %x.patt.loc16_9.2 => constants.%x.patt
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @C.as.GenericInterface.impl(constants.%T) {
// CHECK:STDOUT: %T.patt.loc22_24.2 => constants.%T.patt
// CHECK:STDOUT: %T.loc22_24.1 => constants.%T
// CHECK:STDOUT: %GenericInterface.type.loc22_53.1 => constants.%GenericInterface.type.076
// CHECK:STDOUT: %.loc22_55 => constants.%.c61
// CHECK:STDOUT: %GenericInterface.impl_witness.loc22_55.2 => constants.%GenericInterface.impl_witness
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %C.as.GenericInterface.impl.F.type => constants.%C.as.GenericInterface.impl.F.type
// CHECK:STDOUT: %C.as.GenericInterface.impl.F => constants.%C.as.GenericInterface.impl.F
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @C.as.GenericInterface.impl.F(constants.%T) {
// CHECK:STDOUT: %T => constants.%T
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.51d
// CHECK:STDOUT: %x.param_patt.loc23_18.2 => constants.%x.param_patt
// CHECK:STDOUT: %x.patt.loc23_18.2 => constants.%x.patt
// CHECK:STDOUT: }
// CHECK:STDOUT:
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