@@ -52,7 +52,7 @@ void rt_interrupt_leave_sethook(void (*hook)(void))
#ifdef RT_USING_SMP
#define rt_interrupt_nest rt_cpu_self()->irq_nest
#else
volatile rt_uint8_t rt_interrupt_nest;
volatile rt_uint8_t rt_interrupt_nest = 0;
#endif
/**
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