Hi Ozino Thanks for your reply, no example is referred and the issue cannot be 100% reproduced at every position when call the function in this way: Eample. Function_handler(Eample.&Example_instance), customer only tries ccs6.2 and v15.12.3.LTS compiler. For more details, I try to check the NMI to see what issue brings the program into illegal interrupt, but not NMI flag is set: there is also no reset when we look into the disassembly, the program executes the "LCR *XAR7" every time before it stuck no error reported at console window. thanks Joe
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