diff options
Diffstat (limited to 'glnx-backports.h')
| -rw-r--r-- | glnx-backports.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/glnx-backports.h b/glnx-backports.h index cd853cc..b6d93c0 100644 --- a/glnx-backports.h +++ b/glnx-backports.h @@ -27,6 +27,26 @@ G_BEGIN_DECLS +#if !GLIB_CHECK_VERSION(2, 34, 0) +#define g_clear_pointer(pp, destroy) \ + G_STMT_START { \ + G_STATIC_ASSERT (sizeof *(pp) == sizeof (gpointer)); \ + /* Only one access, please; work around type aliasing */ \ + union { char *in; gpointer *out; } _pp; \ + gpointer _p; \ + /* This assignment is needed to avoid a gcc warning */ \ + GDestroyNotify _destroy = (GDestroyNotify) (destroy); \ + \ + _pp.in = (char *) (pp); \ + _p = *_pp.out; \ + if (_p) \ + { \ + *_pp.out = NULL; \ + _destroy (_p); \ + } \ + } G_STMT_END +#endif + #if !GLIB_CHECK_VERSION(2, 44, 0) #define g_strv_contains glnx_strv_contains |