cor3ntin db93ef14ae

[Clang] Implement CWG2813: Class member access with prvalues (#120223) ...

This is a rebase of #95112 with my own feedback apply as @MitalAshok has
been inactive for a while.
It's fairly important this makes clang 20 as it is a blocker for #107451

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[CWG2813](https://cplusplus.github.io/CWG/issues/2813.html)

prvalue.member_fn(expression-list) now will not materialize a temporary
for prvalue if member_fn is an explicit object member function, and
prvalue will bind directly to the object parameter.

The E1 in E1.static_member is now a discarded-value expression, so if E1
was a call to a [[nodiscard]] function, there will now be a warning.
This also affects C++98 with [[gnu::warn_unused_result]] functions.

This should not affect C where TemporaryMaterializationConversion is a
no-op.

Closes #100314
Fixes #100341

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Co-authored-by: Mital Ashok <mital@mitalashok.co.uk>

2024-12-18 10:44:42 +01:00

..

p1.cpp

…

p2.cpp

[Clang] Implement CWG2813: Class member access with prvalues (#120223)

2024-12-18 10:44:42 +01:00

p3.cpp

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