Re: [libvirt] [PATCH 9/9] virstoragefile: Resolve Coverity DEADCODE

Coverity complains that the condition "size + 1 == 0" cannot happen. Since 'size' is unsigned 32bit value set using virReadBufInt32BE. Thus rather than + 1, it seems the comparison should be is it at max now and if so, return the failure. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- src/util/virstoragefile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c index 299edcd..0219ce8 100644 --- a/src/util/virstoragefile.c +++ b/src/util/virstoragefile.c @@ -393,7 +393,7 @@ qcowXGetBackingStore(char **res, } if (offset + size > buf_size || offset + size < offset) return BACKING_STORE_INVALID; - if (size + 1 == 0) + if (size == UINT_MAX)

return BACKING_STORE_INVALID; if (VIR_ALLOC_N(*res, size + 1) < 0) return BACKING_STORE_ERROR;