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glib-aux: add _NM_G_TYPE_CHECK_INSTANCE_CAST() as replacement for G_TYPE_CHECK_INSTANCE_CAST()

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Thomas Haller 2022-12-14 16:19:01 +01:00
parent 2b89b2dc01
commit c917d5511b
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1 changed files with 18 additions and 0 deletions
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18
src/libnm-glib-aux/nm-macros-internal.h
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@ -664,6 +664,24 @@ nm_str_realloc(char *str)
/*****************************************************************************/
/* Unfortunately, G_TYPE_CHECK_INSTANCE_CAST() just does a direct cast,
* which can trigger a "-Wcast-align" warning, especially when casting
* a GObject pointer to the desired type.
*
* _NM_G_TYPE_CHECK_INSTANCE_CAST() avoids that warning.
*
* Since the entire point of G_TYPE_CHECK_INSTANCE_CAST_() is to do a
* runtime check on the type (with conditional assertions via G_DISABLE_CAST_CHECKS),
* we already assert that the gtype is right, and the alignment is also
* expected to be right.
*
* See https://gitlab.gnome.org/GNOME/glib/-/merge_requests/3139
*/
#define _NM_G_TYPE_CHECK_INSTANCE_CAST(instance, g_type, c_type) \
G_TYPE_CHECK_INSTANCE_CAST(((void *) (instance)), (g_type), c_type)
/*****************************************************************************/
static inline gpointer
nm_g_object_ref(gpointer obj)
{