https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293364
Bug ID: 293364
Summary: base libc++ incompatibilities with GCC 15, built-in
traits
Product: Base System
Version: CURRENT
Hardware: Any
URL: https://github.com/llvm/llvm-project/pull/137871
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Blocks: 293329
Flags: mfc-stable15?, mfc-stable14?, mfc-stable13?,
needs_errata?([email protected])
CC: [email protected]
Greetings,
GCC 15 bombs out when building C++ stuff whilst using libc++ as its -stdlib=,
which is required to obtain ABI compatibility with requisite libraries built
through other ports.
However, libc++'s headers apparently use built-ins such as __decay with GCC 15
in places where GCC 14 and older would not, and GCC complains.
A good explanation is this comment:
https://github.com/NVIDIA/stdexec/issues/1375#issuecomment-2303803306
The Upstream LLVM project seems to have fixed this through
https://github.com/llvm/llvm-project/pull/137871 - can we cherry-pick these for
FreeBSD 15, 14, 13's libc++?
If not, what else would be the recommended solution? Is there some way to
override this?
There are related issues with suggestions that haven't materialized.
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260139#c3
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260139#c4
Unsure what this would give us:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215193
Referenced Bugs:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293329
[Bug 293329] graphics/rawtherapee: Fails to build with GCC 15: fatal error:
bits/functexcept.h: No such file or directory
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