| #include <dlfcn.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| int main(int argc, char *argv[]) { |
| dlerror(); |
| void *f1_handle = dlopen("func.shared", RTLD_LAZY | RTLD_GLOBAL); |
| if (f1_handle == NULL) { |
| fprintf(stderr, "unable to open 'func.shared': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| void (*func)(void) = (void (*)(void))dlsym(f1_handle, "func"); |
| if (func == NULL) { |
| fprintf(stderr, "unable to lookup symbol 'func': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| dlerror(); |
| void *f2_handle = dlopen("func2.shared", RTLD_LAZY | RTLD_GLOBAL); |
| if (f2_handle == NULL) { |
| fprintf(stderr, "unable to open 'func2.shared': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| void (*func2)(void) = (void (*)(void))dlsym(f2_handle, "func2"); |
| if (func2 == NULL) { |
| fprintf(stderr, "unable to lookup symbol 'func2': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| func2(); |
| |
| #ifdef USE_LIB3 |
| void *f3_handle = dlopen("func3.shared", RTLD_LAZY | RTLD_GLOBAL); |
| if (f3_handle == NULL) { |
| fprintf(stderr, "unable to open 'func3.shared': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| void (*func3)(void) = (void (*)(void))dlsym(f3_handle, "func3"); |
| if (func3 == NULL) { |
| fprintf(stderr, "unable to lookup symbol 'func3': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| func3(); |
| #endif |
| |
| dlerror(); |
| void (*gcov_flush1)() = (void (*)())dlsym(f1_handle, "__gcov_flush"); |
| if (gcov_flush1 == NULL) { |
| fprintf(stderr, "unable to find __gcov_flush in func.shared': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| dlerror(); |
| void (*gcov_flush2)() = (void (*)())dlsym(f2_handle, "__gcov_flush"); |
| if (gcov_flush2 == NULL) { |
| fprintf(stderr, "unable to find __gcov_flush in func2.shared': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| if (gcov_flush1 == gcov_flush2) { |
| fprintf(stderr, "Same __gcov_flush found in func.shared and func2.shared\n"); |
| return EXIT_FAILURE; |
| } |
| |
| dlerror(); |
| if (dlclose(f2_handle) != 0) { |
| fprintf(stderr, "unable to close 'func2.shared': %s\n", dlerror()); |
| return EXIT_FAILURE; |
| } |
| |
| func(); |
| |
| int g1 = 0; |
| int g2 = 0; |
| int n = 10; |
| |
| if (n % 5 == 0) |
| g1++; |
| else |
| g2++; |
| |
| return EXIT_SUCCESS; |
| } |
| |