[libvirt] FYI; warning while compiling lxc_driver.c

Chris Lalancette clalance at redhat.com
Tue Oct 21 13:19:54 UTC 2008

Just wanted to give a heads up that the LXC driver spits a warning when
compiling on i686; the exact warning is:

 gcc -DHAVE_CONFIG_H -I. -I.. -I../gnulib/lib -I../gnulib/lib -I../include
-I../include -I../qemud -I/usr/include/libxml2 -DBINDIR=\"/usr/libexec\"
-DSBINDIR=\"/usr/sbin\" -DSYSCONF_DIR=\"/etc\"
-DLOCALEBASEDIR=\"/usr/share/locale\" -DLOCAL_STATE_DIR=\"/var\"
-DGETTEXT_PACKAGE=\"libvirt\" -Wall -Wformat -Wformat-security
-Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow
-Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline
-Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fasynchronous-unwind-tables -DWITH_OPENVZ -DWITH_LXC -DWITH_QEMU -DWITH_TEST
libvirt_la-lxc_driver.lo -MD -MP -MF .deps/libvirt_la-lxc_driver.Tpo -c
lxc_driver.c  -fPIC -DPIC -o .libs/libvirt_la-lxc_driver.o
lxc_driver.c: In function 'lxcGetSchedulerParameters':
lxc_driver.c:1211: warning: dereferencing type-punned pointer will break
strict-aliasing rules

Generally I would go and fix such things, but I didn't spend any time to look at
the code, and I don't have an LXC environment handy to test on, so I didn't want
to break anything.  I just thought I would point it out.

Chris Lalancette

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