From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xen.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Wei Liu <wei.liu2@citrix.com>
Subject: [PATCH for-4.7 1/7] tools/xenstat: Avoid comparing '0 <= unsigned integer'
Date: Wed, 27 Apr 2016 18:01:20 +0100 [thread overview]
Message-ID: <1461776486-31484-2-git-send-email-andrew.cooper3@citrix.com> (raw)
In-Reply-To: <1461776486-31484-1-git-send-email-andrew.cooper3@citrix.com>
Clang points out that this is tautological.
src/xenstat.c:325:8: warning: comparison of 0 <= unsigned expression is
always true [-Wtautological-compare]
if (0 <= index && index < node->num_domains)
~ ^ ~~~~~
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
---
tools/xenstat/libxenstat/src/xenstat.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/xenstat/libxenstat/src/xenstat.c b/tools/xenstat/libxenstat/src/xenstat.c
index 3495f3f..fbe44f3 100644
--- a/tools/xenstat/libxenstat/src/xenstat.c
+++ b/tools/xenstat/libxenstat/src/xenstat.c
@@ -322,7 +322,7 @@ xenstat_domain *xenstat_node_domain(xenstat_node * node, unsigned int domid)
xenstat_domain *xenstat_node_domain_by_index(xenstat_node * node,
unsigned int index)
{
- if (0 <= index && index < node->num_domains)
+ if (index < node->num_domains)
return &(node->domains[index]);
return NULL;
}
@@ -389,7 +389,7 @@ unsigned int xenstat_domain_num_vcpus(xenstat_domain * domain)
xenstat_vcpu *xenstat_domain_vcpu(xenstat_domain * domain, unsigned int vcpu)
{
- if (0 <= vcpu && vcpu < domain->num_vcpus)
+ if (vcpu < domain->num_vcpus)
return &(domain->vcpus[vcpu]);
return NULL;
}
@@ -457,7 +457,7 @@ unsigned int xenstat_domain_num_networks(xenstat_domain * domain)
xenstat_network *xenstat_domain_network(xenstat_domain * domain,
unsigned int network)
{
- if (domain->networks && 0 <= network && network < domain->num_networks)
+ if (domain->networks && network < domain->num_networks)
return &(domain->networks[network]);
return NULL;
}
@@ -472,7 +472,7 @@ unsigned int xenstat_domain_num_vbds(xenstat_domain * domain)
xenstat_vbd *xenstat_domain_vbd(xenstat_domain * domain,
unsigned int vbd)
{
- if (domain->vbds && 0 <= vbd && vbd < domain->num_vbds)
+ if (domain->vbds && vbd < domain->num_vbds)
return &(domain->vbds[vbd]);
return NULL;
}
--
2.1.4
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next prev parent reply other threads:[~2016-04-27 17:01 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 17:01 [PATCH for-4.7 0/7] More tools build fixes with clang Andrew Cooper
2016-04-27 17:01 ` Andrew Cooper [this message]
2016-04-27 18:00 ` [PATCH for-4.7 1/7] tools/xenstat: Avoid comparing '0 <= unsigned integer' Wei Liu
2016-04-27 19:18 ` Doug Goldstein
2016-04-27 17:01 ` [PATCH for-4.7 2/7] tools/blktap2: Use abort() instead of custom crash Andrew Cooper
2016-04-27 18:00 ` Wei Liu
2016-04-27 19:17 ` Doug Goldstein
2016-04-27 17:01 ` [PATCH for-4.7 3/7] tools/blktap2: Fix array initialisers for tapdisk_disk_{types, drivers}[] Andrew Cooper
2016-04-27 18:00 ` Wei Liu
2016-04-27 19:16 ` Doug Goldstein
2016-04-27 17:01 ` [PATCH for-4.7 4/7] tools/blktap2: Fix use of uninitialised variable in _tap_list_join3() Andrew Cooper
2016-04-27 18:00 ` Wei Liu
2016-04-27 19:16 ` Doug Goldstein
2016-04-27 17:01 ` [PATCH for-4.7 5/7] tools/kdd: Fix uninitialised variable warning Andrew Cooper
2016-04-27 18:01 ` Wei Liu
2016-04-27 19:15 ` Doug Goldstein
2016-04-27 17:01 ` [PATCH for-4.7 6/7] travis: Remove clang-3.8 build Andrew Cooper
2016-04-27 18:02 ` Wei Liu
2016-04-27 19:13 ` Doug Goldstein
2016-04-27 17:01 ` [PATCH for-4.7 7/7] travis: Enable tools when building with clang Andrew Cooper
2016-04-27 18:03 ` Wei Liu
2016-04-27 19:14 ` Doug Goldstein
2016-04-27 18:04 ` [PATCH for-4.7 0/7] More tools build fixes " Wei Liu
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