[libvirt] [PATCH] build: silence recent syntax check violations

[Eric Blake]

An upstream gnulib bug meant that some of our syntax checks
weren't being run.  Fix up our offenders before we upgrade to
a newer gnulib.

* src/util/virnetdevtap.c (virNetDevTapCreate): Use flags.
* tests/lxcxml2xmltest.c (mymain): Strip useless ().
---

The gnulib bug was here:
https://lists.gnu.org/archive/html/bug-gnulib/2012-03/msg00194.html

I tested this by temporarily using the fixed gnulib maint.mk.

Pushing under the trivial rule.  I can't call it a build breaker,
because it won't break the build without a gnulib update.

I'm reluctant to update the .gnulib submodule this late in the
game without some review, as we've had bad luck with a submodule
update after the rc1 build in previous releases, so I'm saving
that for another day.  Besides, I'm waiting for a review of a
patch that fixes ssize_t for mingw, and it isn't worth a gnulib
update without that fix.

 src/util/virnetdevtap.c |    7 +++++--
 tests/lxcxml2xmltest.c  |    4 ++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c
index 0b3ac46..717b6ac 100644
--- a/src/util/virnetdevtap.c
+++ b/src/util/virnetdevtap.c
@@ -129,12 +129,14 @@ virNetDevProbeVnetHdr(int tapfd)
  */
 int virNetDevTapCreate(char **ifname,
                        int *tapfd,
-                       unsigned int flags ATTRIBUTE_UNUSED)
+                       unsigned int flags)
 {
     int fd;
     struct ifreq ifr;
     int ret = -1;

+    virCheckFlags(VIR_NETDEV_TAP_CREATE_VNET_HDR, -1);
+
     if ((fd = open("/dev/net/tun", O_RDWR)) < 0) {
         virReportSystemError(errno, "%s",
                              _("Unable to open /dev/net/tun, is tun module loaded?"));
@@ -237,8 +239,9 @@ cleanup:
 #else /* ! TUNSETIFF */
 int virNetDevTapCreate(char **ifname ATTRIBUTE_UNUSED,
                        int *tapfd ATTRIBUTE_UNUSED,
-                       unsigned int flags ATTRIBUTE_UNUSED)
+                       unsigned int flags)
 {
+    virCheckFlags(0, -1);
     virReportSystemError(ENOSYS, "%s",
                          _("Unable to create TAP devices on this platform"));
     return -1;
diff --git a/tests/lxcxml2xmltest.c b/tests/lxcxml2xmltest.c
index 558bd01..6a87939 100644
--- a/tests/lxcxml2xmltest.c
+++ b/tests/lxcxml2xmltest.c
@@ -99,7 +99,7 @@ mymain(void)
     int ret = 0;

     if ((caps = testLXCCapsInit()) == NULL)
-        return (EXIT_FAILURE);
+        return EXIT_FAILURE;

 # define DO_TEST_FULL(name, is_different, inactive)                     \
     do {                                                                \
@@ -124,7 +124,7 @@ mymain(void)

     virCapabilitiesFree(caps);

-    return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);
+    return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }

 VIRT_TEST_MAIN(mymain)
-- 
1.7.7.6