From owner-svn-src-all@freebsd.org Tue Apr 2 18:01:55 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2DF08156E881; Tue, 2 Apr 2019 18:01:55 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C17A56FF04; Tue, 2 Apr 2019 18:01:54 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9B8E91A7D; Tue, 2 Apr 2019 18:01:54 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x32I1su1019440; Tue, 2 Apr 2019 18:01:54 GMT (envelope-from dim@FreeBSD.org) Received: (from dim@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x32I1sxX019439; Tue, 2 Apr 2019 18:01:54 GMT (envelope-from dim@FreeBSD.org) Message-Id: <201904021801.x32I1sxX019439@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: dim set sender to dim@FreeBSD.org using -f From: Dimitry Andric Date: Tue, 2 Apr 2019 18:01:54 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r345807 - head/usr.bin/top X-SVN-Group: head X-SVN-Commit-Author: dim X-SVN-Commit-Paths: head/usr.bin/top X-SVN-Commit-Revision: 345807 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: C17A56FF04 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.96)[-0.960,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Apr 2019 18:01:55 -0000 Author: dim Date: Tue Apr 2 18:01:54 2019 New Revision: 345807 URL: https://svnweb.freebsd.org/changeset/base/345807 Log: Fix regression in top(1) after r344381, causing informational messages to no longer be displayed. This was because the reimplementation of setup_buffer() did not copy the previous contents into any reallocated buffer. Reported by: James Wright PR: 236947 MFC after: 3 days Modified: head/usr.bin/top/display.c Modified: head/usr.bin/top/display.c ============================================================================== --- head/usr.bin/top/display.c Tue Apr 2 17:51:28 2019 (r345806) +++ head/usr.bin/top/display.c Tue Apr 2 18:01:54 2019 (r345807) @@ -1347,7 +1347,8 @@ i_uptime(struct timeval *bt, time_t *tod) static char * setup_buffer(char *buffer, int addlen) { - size_t len; + size_t len, old_len; + char *new_buffer; setup_buffer_bufsiz = screen_width; if (setup_buffer_bufsiz < SETUPBUFFER_MIN_SCREENWIDTH) @@ -1355,13 +1356,18 @@ setup_buffer(char *buffer, int addlen) setup_buffer_bufsiz = SETUPBUFFER_MIN_SCREENWIDTH; } - free(buffer); len = setup_buffer_bufsiz + addlen + SETUPBUFFER_REQUIRED_ADDBUFSIZ; - buffer = calloc(len, sizeof(char)); - if (buffer == NULL) + new_buffer = calloc(len, sizeof(char)); + if (new_buffer == NULL) { errx(4, "can't allocate sufficient memory"); } + if (buffer != NULL) + { + old_len = strlen(buffer); + memcpy(new_buffer, buffer, old_len < len - 1 ? old_len : len - 1); + free(buffer); + } - return buffer; + return new_buffer; }