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Marchesi" To: Jan-Benedict Glaw Cc: gcc-patches@gcc.gnu.org Subject: Re: [PATCH] bpf: Fix unused variable warning References: <20220905104312.xq3dkytz5olm56up@lug-owl.de> Date: Tue, 06 Sep 2022 00:24:09 +0200 In-Reply-To: <20220905104312.xq3dkytz5olm56up@lug-owl.de> (Jan-Benedict Glaw's message of "Mon, 5 Sep 2022 12:43:12 +0200") Message-ID: <87mtbdtq7q.fsf@oracle.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Content-Type: text/plain X-ClientProxiedBy: PR1PR01CA0011.eurprd01.prod.exchangelabs.com (2603:10a6:102::24) To BYAPR10MB2888.namprd10.prod.outlook.com (2603:10b6:a03:88::32) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8070dc0a-6fd4-4a86-43d4-08da8f8d77ba X-MS-TrafficTypeDiagnostic: CH2PR10MB4198:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BYAPR10MB2888.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230016)(366004)(136003)(396003)(376002)(346002)(39860400002)(6916009)(83380400001)(6506007)(26005)(6512007)(316002)(6666004)(36756003)(5660300002)(8936002)(86362001)(478600001)(2906002)(4326008)(66556008)(66476007)(66946007)(8676002)(41300700001)(186003)(2616005)(6486002)(38100700002)(414714003)(473944003);DIR:OUT;SFP:1101; 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Reference the argument as (void) to silence the warning. > > .../gcc/configure --prefix=... --enable-werror-always --enable-languages=all --disable-gcov --disable-shared --disable-threads --target=bpf-unknown-none --without-headers > [...] > make V=1 all-gcc > [...] > > /usr/lib/gcc-snapshot/bin/g++ -fno-PIE -c -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libcody -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../libbacktrace -o regcprop.o -MT regcprop.o -MMD -MP -MF ./.deps/regcprop.TPo ../../gcc/gcc/regcprop.cc > ../../gcc/gcc/regcprop.cc: In function 'bool copyprop_hardreg_forward_1(basic_block, value_data*)': > ../../gcc/gcc/regcprop.cc:794:24: error: unused variable 'regno' [-Werror=unused-variable] > 794 | unsigned int regno = REGNO (SET_SRC (set)); > | ^~~~~ > cc1plus: all warnings being treated as errors > make[1]: *** [Makefile:1146: regcprop.o] Error 1 > make[1]: Leaving directory '/var/lib/laminar/run/gcc-bpf-unknown-none/1/toolchain-build/gcc' > make: *** [Makefile:4565: all-gcc] Error 2 > > > Ok for HEAD? OK. Thanks.