C51:( LINk Error) fatal error: application calls too many recursions.

while using Keil8.04 compiling and link, there is a fatal error:
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISP_MOTORSETUP?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?_LCD_SHOWCHAR?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?_LCD_SHOWHZ?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?_LCD_SHOWSTR?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISP_CYCLICSETUP?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISP_MOTORRUNSETUI?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISP_GENERALSETUI?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISPAR_TIME?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISPAR_STARTTIME?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?DISPAR_ALARMTEMP?MAIN
*** WARNING L13: RECURSIVE CALL TO SEGMENT SEGMENT: ?CO?MAIN CALLER: ?PR?SETUP_MOTORRUNPAR?MAIN
*** FATAL ERROR L232: APPLICATION CONTAINS TOO MANY RECURSIONS
Target not created.

I don't konw why, if there are some error while use function pointer or the pro struct include too many layers? waiting for your idears. this problem has pazzled me several days. If mesessary, i can upload my code for you !

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