[all-commits] [llvm/llvm-project] 214f2d: [clang] Fix assertion crash in CTAD for alias temp...

[Haojian Wu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 214f2de6b61919ca76f7cb7769cd98031de25431
      https://github.com/llvm/llvm-project/commit/214f2de6b61919ca76f7cb7769cd98031de25431
  Author: Haojian Wu <hokein.wu at gmail.com>
  Date:   2026-04-14 (Tue, 14 Apr 2026)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Sema/SemaTemplateDeductionGuide.cpp
    M clang/test/SemaCXX/cxx20-ctad-type-alias.cpp

  Log Message:
  -----------
  [clang] Fix assertion crash in CTAD for alias templates with non-dependent type (#191885)

When building deduction guides, clang assumes that the return type of
the deduction guide would always be a dependent type
(`TemplateSpecializationType`), but this is not true for invalid case,
where the alias RHS is a non-dependent class template specialization, it
is represented as a `RecordType` instead.

Fixes #190517.



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