From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 387BB46A64; Thu, 26 Jun 2025 16:31:36 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 23A3740287; Thu, 26 Jun 2025 16:31:36 +0200 (CEST) Received: from mail-qk1-f173.google.com (mail-qk1-f173.google.com [209.85.222.173]) by mails.dpdk.org (Postfix) with ESMTP id 91C9F40156 for ; Thu, 26 Jun 2025 16:31:34 +0200 (CEST) Received: by mail-qk1-f173.google.com with SMTP id af79cd13be357-7d402c901cbso96963185a.3 for ; Thu, 26 Jun 2025 07:31:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1750948294; x=1751553094; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=Xb9y+3KSx04TBwAVy4ka4oF1l1RiwRMNLB9QsCC3VgQ=; b=aTcOe8pP+LUld3Wwax92Kij5yM/RNjL/lutJ4EQ+w5yaRPcPrLP/QJIRpTP31YWl02 ZvXYjNQS2CZ/CHuUYtFzFuwwpOM5N+/DEYXcpENVx49tY9YO6yxzWYGMiKfKm1XgNWkQ HOvgcAiJCUkJ/r6sLt8PEilrBMjZxfVw8B279YJ+r731LGxMH9XgstHqKbG/EqmwF4gy BwF6AbNGALL2h4efKE0NXqjC7UbmV5Yllbb8fkvHyljoyD8ozejdbXms0dzzGTbYC4bf Qnk/86oY4zTkFHwLT4RGrFHcW7fNLMv/QfWaa7Zw2F4aOttiE7fpA0MUS/0MfNK2Gw8L YUWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750948294; x=1751553094; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Xb9y+3KSx04TBwAVy4ka4oF1l1RiwRMNLB9QsCC3VgQ=; b=Z+NxwEvjr83IYmt/2KrtLoWZaKboyT7PH5Y9QCLqFdTCmxPm8yyJod1wpLTqvQHyk3 2/QF+4CsRSmx06z/WVkKwvVeC1p2aS91yJPIYL0rEKzT83vLX4JL4HHlZ/hyCPpffLKk kVI6lbodBoB0B2a6brvd36NWkFO0zeessquvBp38LZvJv/LA87HM1EcGFrL3v3lIpD+R fBc/RBiCFlqYJyg/jgK/Tgo/oeobS/NYThqTNxO0kXXY8QgBUiTRlon2tpGLD8NEZxqB XSosXIenK0YjT+8ujGOVgNj0LwGTW3hqPm5nrU3hI5txHQUI0Xjt37yI196yuiV5Yu0K yCZA== X-Gm-Message-State: AOJu0Yyo9UG9uoOuLhyTqNb8vaLHjEbNV9DoXtjY4ziaDM0QO7OvTn8T t706v8qAmTu9AsE52PUgYGgwc20IUFuYCFW+C5bxXFsJSX+J2RM6u1IxOmpGIvpfMDSuKTNhCdk EABJh X-Gm-Gg: ASbGncufZNPkBuYrQ1aU8Roh+H7AyYuq9kYAq6sk68BZRQATx7H1Tel7VLtKH4QaDNd xbskv/jU44jbEUkKN46WAi0d3a6hBUUDEfSqkzVzUmPzk0ybYWKnuLEkKIx68yJrP+7ZAKFerG+ /MFbu/HNgK5BqIRr9UbTarQ00T7BxC90qbK7/c/FsKPNSyzjloNJxk6wI/MsEmdMMwr/QxwAlLh 2qSBs/NkBBw0xuVqMKXiC06Wn8rISm4Rdy+lux6wVMEHposAJ/Ewm9lh/evA+1CCHmXWJ5y8t8d 7ZeDMAqNZGkz6pCRkdjn1U7cyFoFWXKiU8Jmtz8GmxtIr+BDxsu9PiO/SEGAHLLR/C5nNQ+TqNj F6TaAMFy4QioHwaqCby/QYXICUuM4YkE8zd096JM= X-Google-Smtp-Source: AGHT+IECqDNGcpMbo4PAAkr6tMcAvzgkoWN/Ah361L2j0TKKhwc5dCwdRTS6c9fTvOxjyyg5ybqyQg== X-Received: by 2002:a05:620a:2488:b0:7d2:1953:a410 with SMTP id af79cd13be357-7d4296979e3mr889394985a.17.1750948293655; Thu, 26 Jun 2025 07:31:33 -0700 (PDT) Received: from hermes.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7d44322dc9fsm5826985a.94.2025.06.26.07.31.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Jun 2025 07:31:33 -0700 (PDT) Date: Thu, 26 Jun 2025 07:31:31 -0700 From: Stephen Hemminger To: Morten =?UTF-8?B?QnLDuHJ1cA==?= Cc: Subject: Re: Function to fail at build time? Message-ID: <20250626073131.1b4e3449@hermes.local> In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35E9FD40@smartserver.smartshare.dk> References: <98CBD80474FA8B44BF855DF32C47DC35E9FD40@smartserver.smartshare.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Thu, 26 Jun 2025 01:55:02 +0200 Morten Br=C3=B8rup wrote: > I was wondering if this was somehow possible: >=20 > #define RTE_VERIFY(exp) do { \ > + if (__rte_constant(exp)) \ > + FAIL_AT_BUILD_TIME(); \ > if (unlikely(!(exp))) \ > rte_panic("line %d\tassert \"%s\" failed\n", __LINE__, #exp); \ > } while (0) >=20 > I tried static_assert(), but it cannot be used in this way. What happens?