__has_builtin(__reference_binds_to_temporary) became false in Clang 19

[timsong-cpp]

Likewise for __has_builtin(__reference_constructs_from_temporary).

Is that intentional? What's the replacement if I want to detect whether the compiler supports them?

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (timsong-cpp)

Likewise for `__has_builtin(__reference_constructs_from_temporary)`.

Is that intentional? What's the replacement if I want to detect whether the compiler supports them?

[timsong-cpp]

@cor3ntin Can a fix for the two intrinsics named in the issue be backported to clang 19? This is a regression from clang 18 - and for __reference_binds_to_temporary, from clang 10.

[cor3ntin]

@cor3ntin Can a fix for the two intrinsics named in the issue be backported to clang 19? This is a regression from clang 18 - and for __reference_binds_to_temporary, from clang 10.

This seems reasonable