Corentin Jabot f72b3e1c07
[Clang] Add detailed notes explaining why is_constructible evaluates to false (Revert 16d5db7) (#151935)
Adds explanation why `is_constructible` evaluates to false.

This reapplies as-is e476f968bc8e438a0435d10934f148de570db8eb.
This was reverted in 16d5db71b3c38f21aa17783a8758f947dca5883f because of
a test failure in libc++.

The test failure in libc++ is interesting in that, in the absence of
nested diagnostics a bunch of diagnostics are emitted as error instead
of notes, which we cannot silence with `-verify-ignore-unexpected`.

The fix here is to prevent the diagnostics to be emitted in the first
place.
However this is clearly not ideal and we should make sure to deploy a
better solution in the clang 22 time frame, in the lines of
https://discourse.llvm.org/t/rfc-add-a-new-text-diagnostics-format-that-supports-nested-diagnostics/87641/12

Fixes #150601

---------

Co-authored-by: Shamshura Egor <164661612+egorshamshura@users.noreply.github.com>
2025-08-05 10:51:26 +02:00
2025-07-15 16:03:12 +02:00
2025-04-14 16:54:14 +08:00

The LLVM Compiler Infrastructure

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