#include <dlfcn.h> #include <pthread.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <gnu/lib-names.h> static void * tf (void *arg) { void *h = dlopen (LIBM_SO, RTLD_LAZY); if (h == NULL) { printf ("dlopen failed: %s\n", dlerror ()); exit (1); } if (dlsym (h, "sin") == NULL) { printf ("dlsym failed: %s\n", dlerror ()); exit (1); } if (dlclose (h) != 0) { printf ("dlclose failed: %s\n", dlerror ()); exit (1); } return NULL; } static int do_test (void) { #define N 10 pthread_t th[N]; for (int i = 0; i < N; ++i) { int e = pthread_create (&th[i], NULL, tf, NULL); if (e != 0) { printf ("pthread_create failed with %d (%s)\n", e, strerror (e)); return 1; } } for (int i = 0; i < N; ++i) { void *res; int e = pthread_join (th[i], &res); if (e != 0 || res != NULL) { puts ("thread failed"); return 1; } } return 0; } #include <support/test-driver.c>