做的一个流量计。DEBUG的时候提示

Sun Mar 17, 2013 11:13:14: The stack 'Stack' is filled to 95% (76 bytes used out of 80). The warning threshold is set to 90.%
Sun Mar 17, 2013 11:13:37: Breakpoint hit: Code @ TEMP_PRESS.c:191.5
Sun Mar 17, 2013 11:13:37: The stack 'Stack' is filled to 100% (80 bytes used out of 80). The warning threshold is set to 90.%
Sun Mar 17, 2013 11:13:41: Breakpoint hit: Code @ TEMP_PRESS.c:191.5
Sun Mar 17, 2013 11:13:41: The stack 'Stack' is filled to 100% (80 bytes used out of 80). The warning threshold is set to 90.%
Sun Mar 17, 2013 11:14:28: Breakpoint hit: Code @ TEMP_PRESS.c:191.5

一开始使用95%  后来一直就是100% 这是什么原因呢？ 有什么危害？