Date: Sun, 1 Jan 2012 17:44:26 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r229178 - stable/9/usr.bin/tar Message-ID: <201201011744.q01HiQjU023123@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: dim Date: Sun Jan 1 17:44:26 2012 New Revision: 229178 URL: http://svn.freebsd.org/changeset/base/229178 Log: MFC r228616: In usr.bin/tar/tree.c, if you really want to poke to NULL, you must use volatile, otherwise the indirection will not be emitted. Modified: stable/9/usr.bin/tar/tree.c Directory Properties: stable/9/usr.bin/tar/ (props changed) Modified: stable/9/usr.bin/tar/tree.c ============================================================================== --- stable/9/usr.bin/tar/tree.c Sun Jan 1 17:42:02 2012 (r229177) +++ stable/9/usr.bin/tar/tree.c Sun Jan 1 17:44:26 2012 (r229178) @@ -315,7 +315,7 @@ tree_next(struct tree *t) const char *msg = "Unable to continue traversing" " directory hierarchy after a fatal error."; write(2, msg, strlen(msg)); - *(int *)0 = 1; /* Deliberate SEGV; NULL pointer dereference. */ + *(volatile int *)0 = 1; /* Deliberate SEGV; NULL pointer dereference. */ exit(1); /* In case the SEGV didn't work. */ }
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201201011744.q01HiQjU023123>