((void) sizeof((void) (_expr1), (void) (_expr2), \
(void) (_expr3), (void) (_expr4), (void) (_expr5), 0))
+#define BT_DIAG_PUSH _Pragma ("GCC diagnostic push")
+#define BT_DIAG_POP _Pragma ("GCC diagnostic push")
+
+#define BT_DIAG_IGNORE_SHADOW _Pragma("GCC diagnostic ignored \"-Wshadow\"")
+
#if defined __clang__
# if __has_warning("-Wunused-but-set-variable")
# define BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE \