1 #include <stdio.h> 2 3 extern void start_a2( void ) __attribute__((constructor)); 4 extern void finish_a2( void ) __attribute__((destructor)); 5 6 void start_a2(void)7start_a2( void ) 8 { 9 printf( "start_a2\n" ); 10 } 11 12 void finish_a2(void)13finish_a2( void ) 14 { 15 printf( "finish_a2\n" ); 16 } 17