Haojian Wu 5e77dfecd2 [clang] CTAD: build aggregate deduction guides for alias templates. (#85904) ...

Fixes https://github.com/llvm/llvm-project/issues/85767.

The aggregate deduction guides are handled in a separate code path. We
don't generate dedicated aggregate deduction guides for alias templates
(we just reuse the ones from the underlying template decl by accident).
The patch fixes this incorrect issue.

Note: there is a small refactoring change in this PR, where we move the
cache logic from `Sema::DeduceTemplateSpecializationFromInitializer` to
`Sema::DeclareImplicitDeductionGuideFromInitList`

2024-04-05 21:07:14 +02:00

438 KiB

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