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Tue, 13 Jul 2021 02:46:35 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a05:6a20:a002:b029:1e:dcb9:6f96 with HTTP; Tue, 13 Jul 2021 02:46:35 -0700 (PDT) In-Reply-To: <7c354c3b-899-26d-01e-e69abde0b322@SDF.ORG> References: <28C2E353AF3CC6A064D8A1A403C1E1C2@eigenstate.org> <1fbcd31c-c6f-7991-951-3f1daae8d895@SDF.ORG> <6c633170-ba92-52f4-5244-28fa6c7302b@SDF.ORG> <8c4d60f0-7ed1-aa10-239f-6267c75cd33a@SDF.ORG> <7c354c3b-899-26d-01e-e69abde0b322@SDF.ORG> From: hiro <23hiro@gmail.com> Date: Tue, 13 Jul 2021 11:46:35 +0200 Message-ID: Subject: Re: [9fans] pngread: alloc chunk's length To: 9fans <9fans@9fans.net> Content-Type: text/plain; charset="UTF-8" Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 39e18f9c-e3bf-11eb-a510-84f4bb54e3e1 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UNGE3MTRlZDE0YzUwNzY3YS1NNzY1NDFlNTc5MjU0ODBhYjYyMDZl?= =?UTF-8?B?NTYwPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M76541e57925480ab6206e560:1:WXJw8nTEwIS7qv1tNvJy8iBsLT3psFQM36qlzQuX2zs you seem to propose that if the png tells us to then we should allocate 2GB per chunk, just bec. the spec allows it even if the spec doesn't tell us a limit, we might want to have a limit. On 7/13/21, adr via 9fans <9fans@9fans.net> wrote: > On Tue, 13 Jul 2021, hiro wrote: >> are you saying this is a purely synthetic error, it doesn't happen in >> the wild bec. these sizes are normally more sane? >=20 > No, no... you got it wrong. You have to follow the specification > of the format, unless you want to have surprises like this one. >=20 > The file you'll obtain with the example I gave you will be as > correct as any other png file. >=20 > Regards, > adr. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T4a714ed14c50767a-M76541= e57925480ab6206e560 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription