[libvirt] [PATCH 7/7] qemudDomainAttachSCSIDisk: avoid FP NULL-ptr-deref from clang
Daniel P. Berrange
berrange at redhat.com
Wed Apr 14 17:41:27 UTC 2010
On Wed, Apr 14, 2010 at 06:02:36PM +0200, Jim Meyering wrote:
> From: Jim Meyering <meyering at redhat.com>
>
> * src/util/conf.c (virConfParseValue): Add an sa_assert.
> ---
> src/util/conf.c | 9 ++++++++-
> 1 files changed, 8 insertions(+), 1 deletions(-)
>
> diff --git a/src/util/conf.c b/src/util/conf.c
> index ae0459e..38eb163 100644
> --- a/src/util/conf.c
> +++ b/src/util/conf.c
> @@ -1,7 +1,7 @@
> /**
> * conf.c: parser for a subset of the Python encoded Xen configuration files
> *
> - * Copyright (C) 2006, 2007, 2008, 2009 Red Hat, Inc.
> + * Copyright (C) 2006, 2007, 2008, 2009, 2010 Red Hat, Inc.
> *
> * See COPYING.LIB for the License of this software
> *
> @@ -473,6 +473,13 @@ virConfParseValue(virConfParserCtxtPtr ctxt)
> SKIP_BLANKS_AND_EOL;
> }
> while ((ctxt->cur < ctxt->end) && (CUR != ']')) {
> +
> + /* Tell Clang that when execution reaches this point
> + "lst" is guaranteed to be non-NULL. This stops it
> + from issuing an invalid NULL-dereference warning about
> + "prev = lst; while (prev->next..." below. */
> + sa_assert (lst);
> +
> if (CUR != ',') {
> virConfError(ctxt, VIR_ERR_CONF_SYNTAX,
> _("expecting a separator in list"));
ACK
Daniel
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