From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by sourceware.org (Postfix) with ESMTPS id 6C03A3856DF2 for ; Tue, 23 May 2023 08:07:49 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 6C03A3856DF2 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=adacore.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=adacore.com Received: by mail-wr1-x432.google.com with SMTP id ffacd0b85a97d-309550d4f73so3034139f8f.1 for ; Tue, 23 May 2023 01:07:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=adacore.com; s=google; t=1684829268; x=1687421268; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=Fo8D6tJ7Ki82gSnXwZ6LR8u55ubkgs6XbnIr8/f3c+Q=; b=jop2CgNNNlRTxFrZ41JEi7ShXm5VKT+E8gboHhHd9tub9IPvDk+T4zBjJ5gU5s0AGe Q5SYkRQQUkbmAAGcMdQ1gMMdeJhQB9Osm9m/CmGV3K4RbBwx8lsDAse5zzTaDrE2rw9D kcJQePN5UCtt3xY/nq23vbMR21BqaU0Ar0u5CaKCvq2GP2pj6t8w1cdGczE2yZCyjWS2 n9HSv3BesrRPTn60k1/wGBkcnbdv6QeL1shK+W8qcqu5wMDHzL1MAO9pZdgvmFbctZLg 2g5JvlWL6MoSjehbH+j5RELlPw/H5u5WrwORR5AHtGC9biIxVgLdNHTlSUBzHLtoCr3X SKlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684829268; x=1687421268; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Fo8D6tJ7Ki82gSnXwZ6LR8u55ubkgs6XbnIr8/f3c+Q=; b=U6roBcmwftHt1nIr2szQbXmbVgMaUqzmmcDIc3U3/OXT8aAhfzZQRNbXVMRr0VTFlC tn9lzUYEr4CCwChd5KKlt0uhZsQz+j06sMmf31ufW9NWQyy8BMODCWTHZk3avS2j5VOg 9PEqfs8wZCMyCvPHCrUeRClQcAyCUqvRQ5T/Pml3SGH1N/xVlyiK+lcokI/Ls7CIMl7Q nAw/lmly+2HXm7e9YwTK3q9S3DC3M/PUwDtu0saF1wLoaD8VUmrwc/Jq1l6SyJef1r+z vha9xn65iAiluV4YalAaOjUC1ovj+BJP256wfCqlckuEsjutdC8fCUgme+i4/OokNCXf lj5g== X-Gm-Message-State: AC+VfDyBMK7/GBgubDrhP0LVhekngG0CTQRFRa9XLP2p+CpF0zPpQkZn S/HBqzqru8vNBoSGMwI+NzH4PJ1c7yUDAHewfWxO5w== X-Google-Smtp-Source: ACHHUZ7wHmoFzdBtSqnikNMfHHbCiicDPO7a3wPRKwr59iXMhaNrMILw3zEqqV5BYaFbRg/MxhFG1A== X-Received: by 2002:adf:d0d1:0:b0:307:7d12:9bc9 with SMTP id z17-20020adfd0d1000000b003077d129bc9mr12024318wrh.21.1684829268269; Tue, 23 May 2023 01:07:48 -0700 (PDT) Received: from poulhies-Precision-5550.telnowedge.local (lmontsouris-659-1-24-67.w81-250.abo.wanadoo.fr. [81.250.175.67]) by smtp.gmail.com with ESMTPSA id c10-20020a5d414a000000b00304ae802f02sm10171881wrq.66.2023.05.23.01.07.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 May 2023 01:07:47 -0700 (PDT) From: =?UTF-8?q?Marc=20Poulhi=C3=A8s?= To: gcc-patches@gcc.gnu.org Cc: Piotr Trojanek Subject: [COMMITTED] ada: Suppress warning about Subprogram_Variant failing at run time Date: Tue, 23 May 2023 10:07:47 +0200 Message-Id: <20230523080747.1872885-1-poulhies@adacore.com> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-13.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE 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: From: Piotr Trojanek Warning about check failing at run time is likely spurious for mutually recursive subprograms with multiple variant clauses. These will be non-trivial to detect, so we simply suppress the warning altogether for all subprogram variants. gcc/ada/ * exp_prag.adb (Expand_Pragma_Check): Suppress warning for checks of subprogram variants. Tested on x86_64-pc-linux-gnu, committed on master. --- gcc/ada/exp_prag.adb | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/gcc/ada/exp_prag.adb b/gcc/ada/exp_prag.adb index ceb27848dad..c6b3bed5425 100644 --- a/gcc/ada/exp_prag.adb +++ b/gcc/ada/exp_prag.adb @@ -564,6 +564,13 @@ package body Exp_Prag is then null; + -- For Subprogram_Variant suppress the warning altogether, because + -- for mutually recursive subprograms with multiple variant clauses + -- some of the clauses might have expressions that are only meant for + -- verification and would always fail when executed. + + elsif Nam = Name_Subprogram_Variant then + null; elsif Nam = Name_Assert then Error_Msg_N ("?.a?assertion will fail at run time", N); else -- 2.40.0