From patchwork Fri Jun 26 20:28:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Rheinhardt X-Patchwork-Id: 20633 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 4EEC7449F93 for ; Fri, 26 Jun 2020 23:28:37 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 2B01368B0BE; Fri, 26 Jun 2020 23:28:37 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 5029568B03B for ; Fri, 26 Jun 2020 23:28:31 +0300 (EEST) Received: by mail-wr1-f67.google.com with SMTP id k6so10671660wrn.3 for ; Fri, 26 Jun 2020 13:28:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FRfvvwvLF3KXeg5eK3vy7SEmXH7jBT2VuF5OL4bu9Ls=; b=QOtPMUYlvG/rI04olC6Glpi+vRO1xH6ZgehnSpkBjL4n4JwYS3jwp4zx7dAYEigzxS g6xsdrhm7rHlcmkjtK7qoC3v9OLxVRmRCZ5hOVwyeyHq20YS9fgnWGB+OkX9jG+1Nwkp pnPkOl5Is8Oh8G8IOB1/rXZvsKOy9m8j/O1MFMpWQKYWHLZEEvsF+/xmcyhz8Lz6Fe/h XMAL/3LI0VozP7Kz8ycSt/ExJPDl61yZUEzcKFRIPCc56XcCSuAShGe/FoPAMDg0CG0u 9v2o48BFO+0HCQ02yhmfQbqjCYIjXnmeF/XQPDGPqeBqDlOMciOqBbqilsTPX/aHj2xO 3sVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=FRfvvwvLF3KXeg5eK3vy7SEmXH7jBT2VuF5OL4bu9Ls=; b=hHNFm6+Ta26Ckl12hPNm+ttjcTfsTpWBo1+DYj3raUh8ZtrTtYXs2DssmXmKZZU0gt cNKXdSA2WIQ8e0lC5zz4ZcpY9KLtgHlUT+E3iLwKLHLiCoA71/oETQ4p3iGoShe9BPS0 lR2l49lFQBUzz4vC3x+WN2M6nfBdTMYXs9xjsP4YRNWi4sP5X1xMG9osiMdBWSfLXZeh hIlxTDGJBf7s9/JF4V2TzbdIL8rNkTYhyXEC1b0oAWaCTkakej4RvXGhv9/kHq08hd4a VQf/PMdHQmORK1J+JviH7uw6MdkvXFwEKj4SE+FqNdcEoQMMTM2K05EUL+OSx/ArnvZR kxEQ== X-Gm-Message-State: AOAM533wAR1W6nmkQPGUwrHQkdzbYyHDXLzZqznMvpxX/QU+INBbEi2+ qUKLoGCgudbb4cvQ5GrbGTsqqjLC X-Google-Smtp-Source: ABdhPJzevkSkjVkfT3z/NCZxkXkhiGH454aE6qbKqgjuey+2Fpo3zTD4Q1iLNOsdsA2oOH0tL1IicQ== X-Received: by 2002:adf:eec8:: with SMTP id a8mr5506299wrp.421.1593203310279; Fri, 26 Jun 2020 13:28:30 -0700 (PDT) Received: from sblaptop.fritz.box (ipbcc10296.dynamic.kabel-deutschland.de. [188.193.2.150]) by smtp.gmail.com with ESMTPSA id u8sm3519293wrt.28.2020.06.26.13.28.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Jun 2020 13:28:29 -0700 (PDT) From: Andreas Rheinhardt To: ffmpeg-devel@ffmpeg.org Date: Fri, 26 Jun 2020 22:28:20 +0200 Message-Id: <20200626202822.17751-1-andreas.rheinhardt@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 1/3] avcodec/bitstream: Don't check for undefined behaviour after it happened X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Andreas Rheinhardt Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Andreas Rheinhardt --- libavcodec/bitstream.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/bitstream.c b/libavcodec/bitstream.c index be8a0f634d..53a2db7451 100644 --- a/libavcodec/bitstream.c +++ b/libavcodec/bitstream.c @@ -162,9 +162,9 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes, uint32_t code; volatile VLC_TYPE (* volatile table)[2]; // the double volatile is needed to prevent an internal compiler error in gcc 4.2 - table_size = 1 << table_nb_bits; if (table_nb_bits > 30) return AVERROR(EINVAL); + table_size = 1 << table_nb_bits; table_index = alloc_table(vlc, table_size, flags & INIT_VLC_USE_NEW_STATIC); ff_dlog(NULL, "new table index=%d size=%d\n", table_index, table_size); if (table_index < 0)