commit | a9605730a481707623358d3b12220f05cfdc50a8 | [log] [tgz] |
---|---|---|
author | Haojian Wu <hokein.wu@gmail.com> | Thu May 16 13:01:18 2024 +0200 |
committer | GitHub <noreply@github.com> | Thu May 16 13:01:18 2024 +0200 |
tree | 5688a16668e7a65f334f1582328d0cbf1101ff02 | |
parent | 239f8b9eb0725b4c6ff8342717b6abbfc9a7915a [diff] |
[clang] CTAD: implement the missing IsDeducible constraint for alias templates (#89358) Fixes https://github.com/llvm/llvm-project/issues/85192 Fixes https://github.com/llvm/llvm-project/issues/84492 This patch implements the "IsDeducible" constraint where the template arguments of the alias template can be deduced from the returned type of the synthesized deduction guide, per C++ [over.match.class.deduct]p4. In the implementation, we perform the deduction directly, which is more efficient than the way specified in the standard. Also update relevant CTAD tests which were incorrectly compiled due to the missing constraint.
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