From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-x52b.google.com (mail-pg1-x52b.google.com [IPv6:2607:f8b0:4864:20::52b]) by sourceware.org (Postfix) with ESMTPS id 047DB3858D28; Tue, 2 Apr 2024 16:59:45 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 047DB3858D28 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 047DB3858D28 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2607:f8b0:4864:20::52b ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712077188; cv=none; b=UXSZBS/b+R9gHHExHfbDU6b1kCrFjuhuliqf4V++nD7jo9+F/kisEmCRpKH0dEPArcY8KePw/XRIo3PY5csWuogGOh0tFh2NeGstrH0N278M16V7bph0gIdREyQ2d5z01YxxLrXq5lnsnH+m3En5LwQKiklv+VAzxavHB2kotU0= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712077188; c=relaxed/simple; bh=QHlfwEVoMAFdObBwzjcrxU2wOSDNQ3VGu9b68n2g6X8=; h=DKIM-Signature:MIME-Version:From:Date:Message-ID:Subject:To; b=kOFtwcKi3ZkICtZsAHFgF4YNFSEWgnKeakvWmM8Lp1063dfIwJ2DhGI/IibVu1qDld+lMWAAW7a4EixutITdUmsYbKgRlj5ACEO9tGlc+tOwccFmyL+NN0Gg6ajdcgNrjKa4w+tvL646jzo4jVYep1mgSWhYdg0xApFRYHpmSn0= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-pg1-x52b.google.com with SMTP id 41be03b00d2f7-5f034b4dcecso37401a12.1; Tue, 02 Apr 2024 09:59:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1712077184; x=1712681984; darn=gcc.gnu.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=QHlfwEVoMAFdObBwzjcrxU2wOSDNQ3VGu9b68n2g6X8=; b=a02on0sXAaivSI5WvhQwn6mBUeqVY42BfVFexrPe0MxGuF4CzhnPetTnQ7fQoFHt/s mYK/BU2D27K3ufxqSlyz4Z3K6Mm1OOz+Ft2BfMfh2PRTxRYRpn+tlSPCh/CUyqgNSBRE BG3chkbtZP+OgK3mbsDmXTKLjdEe2I1MI0d7pEd2p93w+izCSAMKY47eP0/QMLZ5Q3Vp Y50su7GgyzTsNAHaJpIa4qig80mKzZIqh2SAQe15EzJYWuAaO6bNVsIWyWvUL8zb8CEv R3ss+AssCshQ+m2ndAgHq40eY3nzuiY6bzC3oRIMY203ohvHzj6UHQdJKtT+/vGmW1Hn yAGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712077184; x=1712681984; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=QHlfwEVoMAFdObBwzjcrxU2wOSDNQ3VGu9b68n2g6X8=; b=EzA1A440fuMEwwGj2hn8oAPYhtU+y1S/VLAzL9/uFQHGyJsxoju88AreMTyhNXKZ47 b9+Tl/HhjtA23jrzHVxVrgbbaHwWbv5cNBgWXAq6lRVm4GL9QiBL6sBSFqKT08xHxdYB 99ZiU0gsrggQraBptXmv1Tqysu/2zt+GbufOEW5T3Dvlzw24op6wKS6S/JtaZ5brn4x6 Dtca845aO4+FOJKVt6s0PlgQABNEvknsT75/XuDMFpv5OLQWHFmtr9PULQzK6n5UCvFG FEX2GaOZbIkmesWzwt45bRqVyz9fQT0Oe8uY2klz/DfEMYqyiSkJNKVFY+373ZrFRcA8 9L4g== X-Forwarded-Encrypted: i=1; AJvYcCXdYcW3avJL9yWdZn9cJhkwfPBQZYthd9klRrGFE/vTekSIRzASisVJpDUCeAjVQsAoqn7MRo16WzleD19ZzrrFWHTA9edCEiBagYVjV6h8w2ESOpoemfHW+NPuJilz X-Gm-Message-State: AOJu0YzS85CzRalNKBWx+ZIkw5Uys50HYEH3Q5zQzFkXh0+Bv+h+ctWE 3IFbxaTUQWGhnVqPrSOHjFEG588J8i417NA/W+HTIOfsY3jA+dmcGIjpy7nzN8370MN1GWKiF1U oHbt017aGIt2QW91zNbm0eoTkx/c= X-Google-Smtp-Source: AGHT+IHUnYornXJWRXoXaYsHkqiergnGkM2buYyqnTljI8+brLZT4ZGW8MNQnuOOE6+CvjXyF6jYeSxG7aLq+sMUHIY= X-Received: by 2002:a17:90a:68cf:b0:2a2:1ec6:924 with SMTP id q15-20020a17090a68cf00b002a21ec60924mr114402pjj.3.1712077183760; Tue, 02 Apr 2024 09:59:43 -0700 (PDT) MIME-Version: 1.0 From: Pilar Latiesa Date: Tue, 2 Apr 2024 18:59:32 +0200 Message-ID: Subject: Re: [PATCH] libstdc++: Allow adjacent __maybe_present_t to overlap To: ppalka@redhat.com, libstdc++@gcc.gnu.org, gcc-patches@gcc.gnu.org Content-Type: multipart/alternative; boundary="0000000000005dc2920615200801" X-Spam-Status: No, score=-0.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --0000000000005dc2920615200801 Content-Type: text/plain; charset="UTF-8" Just out of curiosity: would this also work? template struct _Absent {}; template using __maybe_present_t = __conditional_t<_Present, _Tp, _Absent<_Tp, _Disc>>; That would avoid having to type 0, 1, ... manually. --0000000000005dc2920615200801--