On Fri, Jun 03, 2016 at 13:32:02 +0200, Martin Kletzander wrote:
When building using -Og, gcc sees that some variables can be used
uninitialized It can be debatable whether it is possible with our
codeflow, but functions should be self-contained and initializations are
always good. The return instead of goto is due to actualType being used
in the cleanup.
Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com>
---
src/lxc/lxc_driver.c | 2 +-
src/nwfilter/nwfilter_ebiptables_driver.c | 2 +-
src/util/virbitmap.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 67f14fe766a5..f0948eae774e 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -4275,7 +4275,7 @@ lxcDomainAttachDeviceNetLive(virConnectPtr conn,
if (!priv->initpid) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("Cannot attach disk until init PID is known"));
- goto cleanup;
+ return -1;
}
False positive. actualType is never evaluated uninitialized since ret is
set to -1 and veth is NULL.
It makes sense to change it since a lot of stuff below is returning -1
directly.
if (virLXCProcessValidateInterface(net) < 0)
diff --git a/src/nwfilter/nwfilter_ebiptables_driver.c
b/src/nwfilter/nwfilter_ebiptables_driver.c
index 423d069e1b26..b7be2917e29e 100644
--- a/src/nwfilter/nwfilter_ebiptables_driver.c
+++ b/src/nwfilter/nwfilter_ebiptables_driver.c
@@ -1570,7 +1570,7 @@ iptablesCreateRuleInstanceStateCtrl(virFirewallPtr fw,
const char *ifname,
virNWFilterVarCombIterPtr vars)
{
- int rc;
+ int rc = 0;
bool directionIn = false;
char chainPrefix[2];
bool maySkipICMP, inout = false;
Bah. This function makes my brain hurt. I didn't bother checking.
diff --git a/src/util/virbitmap.c b/src/util/virbitmap.c
index 9283aef1735b..4ca59f9d6227 100644
--- a/src/util/virbitmap.c
+++ b/src/util/virbitmap.c
@@ -817,7 +817,7 @@ virBitmapLastSetBit(virBitmapPtr bitmap)
ssize_t i;
int unusedBits;
ssize_t sz;
- unsigned long bits;
+ unsigned long bits = 0;
okay, so there are possible input values ableit being invalid and
impossible that would actually allow to evaluate bits when uninitialized.
ACK, I hope that people get tired of experimenting with bleeding edge
compilers soon.
Peter