system/NetworkManager
system/NetworkManager
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/NetworkManager/NetworkManager synced 2024-11-05 19:03:31 +00:00
Code Issues Projects Releases Packages Wiki Activity

shared: add NM_UNCONST_PTR() and NM_UNCONST_PPTR()

Browse source 
Add macros that cast away the constness of a pointer, but
ensure that the type of the pointer is as expected.

Unfortunately, there is no way (AFAIK) to remove the constness of
a variable, without explicitly passing @type to the macro.
This commit is contained in:
Thomas Haller 2018-01-28 09:08:20 +01:00
parent 3d41812945
commit 7a956644d4
1 changed files with 22 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
shared/nm-utils/nm-macros-internal.h
View file

@ -389,6 +389,28 @@ NM_G_ERROR_MSG (GError *error)
#define NM_CONSTCAST(type, obj, ...) \
NM_CONSTCAST_FULL(type, (obj), (obj), ##__VA_ARGS__)
#if _NM_CC_SUPPORT_GENERIC
#define NM_UNCONST_PTR(type, arg) \
_Generic ((arg), \
const type *: ((type *) (arg)), \
type *: ((type *) (arg)))
#else
#define NM_UNCONST_PTR(type, arg) \
((type *) (arg))
#endif
#if _NM_CC_SUPPORT_GENERIC
#define NM_UNCONST_PPTR(type, arg) \
_Generic ((arg), \
const type * *: ((type **) (arg)), \
type * *: ((type **) (arg)), \
const type *const*: ((type **) (arg)), \
type *const*: ((type **) (arg)))
#else
#define NM_UNCONST_PPTR(type, arg) \
((type **) (arg))
#endif
#define NM_GOBJECT_CAST(type, obj, is_check, ...) \
({ \
const void *_obj = (obj); \