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c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1567724031; bh=GpRablHOrWwXdLaWSkEx5ZkR4o+qHUTPUW/oFfFPcHc=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=Vsbw1/1A5xv6NLXW6pXBnz3P5UX8BJt3kAVhZwNVqGngtXyi5quKo9R4T8eLzBfwU Y5+deuMkMoni420yrhJuLbpivMxlW8WWj6sOimYxiQRN+qp6QI/5oH4BgHJrUxoykC 1ZzE6vs5EM8jAul3N8LpDUR/6OEeEzAmjjFDfcM4= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.178.48] ([88.70.128.63]) by mail.gmx.com (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MHoRA-1huU2442oo-00Erps; Fri, 06 Sep 2019 00:53:51 +0200 Subject: Re: [PATCH] Fix maybe-uninitialized warnings found by gcc 9 -flto To: Jeff King Cc: Junio C Hamano , =?UTF-8?Q?Ren=c3=a9_Scharfe?= , Paul Tan , "brian m. carlson" , Johannes Schindelin , git@vger.kernel.org References: <20190905082459.26816-1-s-beyer@gmx.net> <20190905224859.GA28660@sigill.intra.peff.net> From: Stephan Beyer Openpgp: preference=signencrypt Autocrypt: addr=s-beyer@gmx.net; 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7peW0asw5mmmj8Kt+1Q6wPCY5H4AMxNlFxiPsmQ/3YaZkFSHGvgBRPYrEdH1YpYXjXOi5qUmh ZFEhWq4HedUt7WnvhpWUDFPePiMBqwAVFGsizb2s30uJ8JYuAa6I0VWZC+Y/vN+hRsJPYG6R9 MsWIrJ741nCU60z0yGJLrBygGZw7pb5fofoQb4AmV+WtZTuT1ecEJNZqFZRlrPehryi8461HU OiH0zjnbjswNwVewdANaCFVri36bN/mnQ0IueHtKAHsGaSoXmQTf/t9fPVTKBqeQJsFa7388n VvYPACF1MOkzyarBNb9oMr4SQ3RG7N/Ug3ywRTjbYSqrQXuHT7p+301pIj9gMeDpSucO3UZ+5 HCKiXIAqyPzXPNoRKHgwLl2rUU23mzFwqWGqIOzWZmhoAAmjX++P5oWsbEOxJoCoamHwi88Zj 0Yr3qiAK+flCPSAjM Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org On 9/6/19 12:48 AM, Jeff King wrote: > On Thu, Sep 05, 2019 at 10:24:59AM +0200, Stephan Beyer wrote: > >> Compiler heuristics for detection of potentially uninitialized variable= s >> may change between compiler versions and enabling link-time optimizatio= n >> may find new warnings. Indeed, compiling with gcc 9.2.1 and enabled >> link-time optimization feature resulted in a few hits that are fixed by >> this patch in the most na=C3=AFve way. This allows to compile git usin= g the >> DEVELOPER=3D1 switch (which sets -Werror) and using the -flto flag. > > Lots of discussion in this thread. Let's try to turn it into some > patches. :) I thought the same and just sent my version of it. :D Stephan