Date: Sat, 17 Dec 2011 01:36:51 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r228616 - head/usr.bin/tar Message-ID: <201112170136.pBH1apEH036884@svn.freebsd.org>
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Author: dim Date: Sat Dec 17 01:36:50 2011 New Revision: 228616 URL: http://svn.freebsd.org/changeset/base/228616 Log: 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. MFC after: 1 week Modified: head/usr.bin/tar/tree.c Modified: head/usr.bin/tar/tree.c ============================================================================== --- head/usr.bin/tar/tree.c Sat Dec 17 01:29:46 2011 (r228615) +++ head/usr.bin/tar/tree.c Sat Dec 17 01:36:50 2011 (r228616) @@ -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. */ }
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