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wrap: Send a more clear warning when attempting to bind /usr/* dirs

Merged Ludovico de Nittis requested to merge wip/usr_warning into master
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@@ -126,3 +126,25 @@ gchar *my_g_utf8_make_valid (const gchar *str,
G_LOG_LEVEL_INFO, \
__VA_ARGS__)
#endif
#if !GLIB_CHECK_VERSION(2, 64, 0)
#if defined(G_HAVE_ISO_VARARGS) && (!defined(G_ANALYZER_ANALYZING) || !G_ANALYZER_ANALYZING)
#define g_warning_once(...) \
G_STMT_START { \
static int G_PASTE (_GWarningOnceBoolean, __LINE__) = 0; /* (atomic) */ \
if (g_atomic_int_compare_and_exchange (&G_PASTE (_GWarningOnceBoolean, __LINE__), \
0, 1)) \
g_warning (__VA_ARGS__); \
} G_STMT_END
#elif defined(G_HAVE_GNUC_VARARGS) && (!defined(G_ANALYZER_ANALYZING) || !G_ANALYZER_ANALYZING)
#define g_warning_once(format...) \
G_STMT_START { \
static int G_PASTE (_GWarningOnceBoolean, __LINE__) = 0; /* (atomic) */ \
if (g_atomic_int_compare_and_exchange (&G_PASTE (_GWarningOnceBoolean, __LINE__), \
0, 1)) \
g_warning (format); \
} G_STMT_END
#else
#define g_warning_once g_warning
#endif
#endif
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