Dana Jansens f51c075f8b Avoid symbolic witnesses for .Self in an impl decl (#7564) ...

Point symbolic witnesses into `.Self` written inside an impl decl at the
impl that is being declared. This is tricky because the impl does not
yet exist. So we use a new instruction `ImplSelfWitness` which _will_ be
replaced by the `ImplWitness` once it becomes available. The
`ImplSelfWitness` acts like a symbolic witness, except it does not
perform lookup, since we know which impl we will get a witness from.

This prevents us from finding other impls when performing lookups into
`.Self` in an impl decl, which produces incorrect/incoherent results.

2026-07-29 16:25:23 +00:00

..

custom_witness

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00

lookup

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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assoc_const_self.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

2026-07-29 16:25:23 +00:00

basic.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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compound.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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declaration.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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empty.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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error_recovery.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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eval_musteval.carbon

Move self to the explicit () parameter list (proposal #7016) (#7272)

2026-06-10 15:30:43 +00:00

extend_final.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00

extend_impl_generic.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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extend_impl.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_alias.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_call_invalid.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_extend_impl_forall.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_extend_impl_scope.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_extend_impl_type_as.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_extend_non_interface.carbon

Resolve cycles in .Self replacement in nested designators (#7183)

2026-05-13 16:11:20 +00:00

fail_extend_partially_defined_interface.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_extend_undefined_interface.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_impl_as_scope.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_impl_bad_assoc_const.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_impl_bad_assoc_fn.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_impl_bad_interface.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_impl_bad_type.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_redefinition.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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fail_self_type_mismatch.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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forward_decls.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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generic_redeclaration.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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impl_as_named_constraint.carbon

Use identified facet type to get impl-as target (#7519)

2026-07-16 19:11:23 +00:00

impl_as.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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impl_assoc_const_with_prelude.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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impl_assoc_const.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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impl_forall.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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impl_inside_interface.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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impl_self_as.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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impl_thunk_min_prelude.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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impl_thunk.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

2026-07-29 16:25:23 +00:00

impl_where_redecl.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00

import_builtin_call.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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import_canonical_witnesses.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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import_compound.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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import_extend_impl.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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import_generic.carbon

Require all impls constraints in impl as to be satisfied (#7531)

2026-07-21 19:31:54 +00:00

import_impl_with_no_interface.carbon

Move self to the explicit () parameter list (proposal #7016) (#7272)

2026-06-10 15:30:43 +00:00

import_interface_assoc_const.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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import_self_specific.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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import_self.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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import_thunk.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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import_use_generic.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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incomplete.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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interface_args.carbon

precompile and cache Carbon prelude (#7432)

2026-07-16 18:02:14 +00:00

multiple_extend.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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name_lookup_in_impl_definition.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

2026-07-29 16:25:23 +00:00

name_poisoning.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00

no_definition_in_impl_file.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

2026-07-13 20:38:19 +00:00

orphan.carbon

Anchor the orphan rule on the first owning declaration (#7573)

2026-07-27 14:49:06 +00:00

redeclaration.carbon

Make proposal filenames use 6 digits and include the title (#7245)

2026-05-29 00:55:04 +00:00

reenter_scopes.carbon

Do not treat impls in different scopes as redeclarations (#7161)

2026-05-04 19:11:51 +00:00

require_satisified_in_interface.carbon

Require all impls constraints in impl as to be satisfied (#7531)

2026-07-21 19:31:54 +00:00

require_satisified_in_named_constraint.carbon

Require all impls constraints in impl as to be satisfied (#7531)

2026-07-21 19:31:54 +00:00

rewrites.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

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self_in_class.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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self_in_signature.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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todo_impl_with_unrelated_fn.carbon

Omit empty observe: blocks from formatted SemIR. (#7487)

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use_assoc_entity.carbon

Avoid symbolic witnesses for .Self in an impl decl (#7564)

2026-07-29 16:25:23 +00:00

using_invalid_interface.carbon

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

2026-07-11 01:22:44 +00:00