gbacktrace: fix G_BREAKPOINT on Darwin (OSX, iOS)

Using __builtin_trap() according to Apple's own documentation:
https://developer.apple.com/library/mac/technotes/tn2124/_index.html#//apple_ref/doc/uid/DTS10003391-CH1-SECCONTROLLEDCRASH

https://bugzilla.gnome.org/show_bug.cgi?id=750807

diff --git a/glib/gbacktrace.h b/glib/gbacktrace.h
index 03b6029..1a4f534 100644 (file)
--- a/glib/gbacktrace.h
+++ b/glib/gbacktrace.h
@@ -55,6 +55,8 @@ void g_on_error_stack_trace (const gchar *prg_name);
 #  define G_BREAKPOINT()        G_STMT_START{ __debugbreak(); }G_STMT_END
 #elif defined (__alpha__) && !defined(__osf__) && defined (__GNUC__) && __GNUC__ >= 2
 #  define G_BREAKPOINT()        G_STMT_START{ __asm__ __volatile__ ("bpt"); }G_STMT_END
 #  define G_BREAKPOINT()        G_STMT_START{ __debugbreak(); }G_STMT_END
 #elif defined (__alpha__) && !defined(__osf__) && defined (__GNUC__) && __GNUC__ >= 2
 #  define G_BREAKPOINT()        G_STMT_START{ __asm__ __volatile__ ("bpt"); }G_STMT_END

+#elif defined (__APPLE__)
+#  define G_BREAKPOINT()        G_STMT_START{ __builtin_trap(); }G_STMT_END

 #else   /* !__i386__ && !__alpha__ */
 #  define G_BREAKPOINT()        G_STMT_START{ raise (SIGTRAP); }G_STMT_END
 #endif  /* __i386__ */
 #else   /* !__i386__ && !__alpha__ */
 #  define G_BREAKPOINT()        G_STMT_START{ raise (SIGTRAP); }G_STMT_END
 #endif  /* __i386__ */