1 // Indirectly call a bunch of functions. 2 3 #include <assert.h> 4 5 extern int cnt; 6 7 typedef int (*F)(int, int); 8 9 // A function in the same object. 10 int f_local(int x, int y) { 11 return x + y; 12 } 13 14 // A function in another object. 15 int f_other_object(int x, int y); 16 17 // A function in another DSO. 18 int f_dso(int x, int y); 19 20 // A function in another DSO that is replaced by the wrapper. 21 int f_replaced(int x, int y); 22 23 void run_test(void) { 24 int x; 25 int expected_cnt = 0; 26 volatile F f; 27 28 if (SLOW) ++expected_cnt; 29 f = &f_local; 30 x = f(1, 2); 31 assert(x == 3); 32 assert(cnt == expected_cnt); 33 34 if (SLOW) ++expected_cnt; 35 f = &f_other_object; 36 x = f(2, 3); 37 assert(x == 6); 38 assert(cnt == expected_cnt); 39 40 ++expected_cnt; 41 f = &f_dso; 42 x = f(2, 3); 43 assert(x == 7); 44 assert(cnt == expected_cnt); 45 46 ++expected_cnt; 47 f = &f_replaced; 48 x = f(2, 3); 49 assert(x == 11); 50 assert(cnt == expected_cnt); 51 } 52
