On Mon, May 06, 2024 at 10:43:07AM +0200, Michal Privoznik wrote:
Now that we don't have any distro stuck with glib-2.56.0, we can
bump the glib version. In fact, this is needed, because of
g_clear_pointer. Since v7.4.0-rc1~301 we declare at compile time
what version of glib APIs we want to use (by setting
GLIB_VERSION_MIN_REQUIRED = GLIB_VERSION_MAX_ALLOWED = 2.56.0),
regardless of actual glib version in the host.
And since we currently require glib-2.56.0 and force glib to use
APIs of that version, some newer bits are slipping from us. For
instance: regular function version of g_clear_pointer() is used
instead of a fancy macro. So what? Well, g_clear_pointer()
function typecasts passed free function to void (*)(void *) and
then calls it. Well, this triggers UBSAN, understandably. But
with glib-2.58.0 the g_clear_pointer() becomes a macro which
calls the free function directly, with no typecasting and thus no
undefined behavior.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
meson.build | 2 +-
src/libvirt_private.syms | 1 -
src/util/glibcompat.c | 125 ---------------------------------------
src/util/glibcompat.h | 10 ----
4 files changed, 1 insertion(+), 137 deletions(-)
Reviewed-by: Daniel P. Berrangé <berrange(a)redhat.com>
With regards,
Daniel
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