From nobody Sun Feb 22 13:27:07 2026 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fJlBz6RF3z6T9vq for ; Sun, 22 Feb 2026 13:27:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fJlBz5qKCz3VM7 for ; Sun, 22 Feb 2026 13:27:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1771766827; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=HRixs6MsFg92qseZV0uWDWk7RbxzFQ6XmWECkjkvOHY=; b=JUtcbHroFjyIciZ3sdlpMcZQb3hFXQ9jkwkhBDvmUDwkgWJqBy+yYOin6eLVO9fJjEOc5C wluO6973YN++cLOtoTscBC1Y2wGVtoWLKbkPdH2lRdMKtZ8I81k55yU8bEqmH0vnmLCJCP Mt3bIhmugnaWWXWGcr77QEHvUI4E2+m7sW0b+EYrkiOAqVkrSZEm/p5qGMTEZ55/eViKpd libUj0Jd52X1VlAk6Jbu1N8vz7QyV+2o2yB9LOsE505KfMN0GmBviIcDsVYsFPl7C74det v/fP8wi1iZ1IfUzJ+Avy6WnWRQmlctfRJn5+MMazFnjgC/Nd/Dc3ZEqTTAeodg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1771766827; a=rsa-sha256; cv=none; b=n9NY1OccSGSGLbTqGmHJK4xP/vvy21ThFabHxyxfa4fPtF6Q2Vv/5wcvpwekS0FaB1HLRm SutsWTLXDKIQXE8Ydl17qbACQIRyrmqH8CUUlH25gp7n2pAv40RC/NKqwQ8RT6RpknbmGa Z9Vnxn/0/uPLaY4LwtOBCyC/5NlnaxVdWXww6qJ0FJK7KP4UqsdWbxkYJy8hWshoSQIJIf pxHdZxEK5c8xD3vr9FBJ7xH481Szm1yv8QapQqmESs6HAFEZsBaEe1uxeCmikXTnyzE+vt gIzqfFUvvx334DNuSLclsvlcU2GH9St0P86R1X2KCW046Xjkg3LnWekbv2XOMw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1771766827; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=HRixs6MsFg92qseZV0uWDWk7RbxzFQ6XmWECkjkvOHY=; b=pxQzYquwwbpw7RSOffpgvXyiTxyscd7FoLXuZR/0hUsisUpEOwn/4L/mch6PPzwzC6QJ7b 8BOpbLWaLSjVb8V361jL68EH/Ka7Q/BRz34yqqHtxCt5eP+9I4qpbhj7oGmxFO9mZvYJmX fjeHBg//+x+Rf2lg7pOqjzBtmhjcO5FjyDqYPx5I/nxGFdqv9XNq0BLbcIJcQxEdNwV66M UnmZggENsI7ErsM8UkEnDAKasDvBbmaQ67whoosjJVy7tX9wxjeGVCbKdJgy3lPOdTnyg6 jyNKghqzMhLNufaJIXXSFbwmnQan129GdmVmdnc2lC4SYXpyrsI1CCSaQ2t1mA== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4fJlBz4zDhzmmh for ; Sun, 22 Feb 2026 13:27:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61MDR703038642 for ; Sun, 22 Feb 2026 13:27:07 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61MDR71C038641 for bugs@FreeBSD.org; Sun, 22 Feb 2026 13:27:07 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 293364] base libc++ incompatibilities with GCC 15, built-in traits Date: Sun, 22 Feb 2026 13:27:07 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: mandree@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: mfc-stable15? mfc-stable14? mfc-stable13? needs_errata? X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform bug_file_loc op_sys bug_status bug_severity priority component assigned_to reporter cc blocked flagtypes.name Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293364 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: bugs@FreeBSD.org Reporter: mandree@FreeBSD.org CC: salvadore@freebsd.org, secteam@FreeBSD.org Blocks: 293329 Flags: mfc-stable15?, mfc-stable14?, mfc-stable13?, needs_errata?(secteam@FreeBSD.org) CC: secteam@FreeBSD.org Greetings, GCC 15 bombs out when building C++ stuff whilst using libc++ as its -stdlib= =3D, 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=3D260139#c3 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260139#c4 Unsure what this would give us: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215193 Referenced Bugs: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293329 [Bug 293329] graphics/rawtherapee: Fails to build with GCC 15: fatal error: bits/functexcept.h: No such file or directory --=20 You are receiving this mail because: You are the assignee for the bug.=