GLib uses macros to create cleanup functions that are used by g_auto or g_autoptr macros. They expect a function defined as "void (*)(void *)" which is usually not that case. Signed-off-by: Pavel Hrdina <phrdina@redhat.com> --- Pushed under build-breaker rule. m4/virt-compile-warnings.m4 | 2 ++ 1 file changed, 2 insertions(+) diff --git a/m4/virt-compile-warnings.m4 b/m4/virt-compile-warnings.m4 index f6ab795..6ece136 100644 --- a/m4/virt-compile-warnings.m4 +++ b/m4/virt-compile-warnings.m4 @@ -160,6 +160,8 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[ # Need -fipa-pure-const in order to make -Wsuggest-attribute=pure # fire even without -O. wantwarn="$wantwarn -fipa-pure-const" + # We do "bad" function cast to define glib auto cleanup functions + wantwarn="$wantwarn -Wno-cast-function-type" if test "$enable_werror" = "yes" then -- 2.14.3