#include <dlfcn.h> #include <stdio.h> #include <stdlib.h> #include <link.h> #include <tls.h> #define TEST_FUNCTION do_test () static int do_test (void) { #ifdef USE_TLS static const char modname[] = "tst-tlsmod3.so"; int result = 0; int (*fp) (void); void *h; int i; int modid = -1; for (i = 0; i < 10; ++i) { h = dlopen (modname, RTLD_LAZY); if (h == NULL) { printf ("cannot open '%s': %s\n", modname, dlerror ()); exit (1); } /* Dirty test code here: we peek into a private data structure. We make sure that the module gets assigned the same ID every time. The value of the first round is used. */ if (modid == -1) modid = ((struct link_map *) h)->l_tls_modid; else if (((struct link_map *) h)->l_tls_modid != (size_t) modid) { printf ("round %d: modid now %zu, initially %d\n", i, ((struct link_map *) h)->l_tls_modid, modid); result = 1; } fp = dlsym (h, "in_dso2"); if (fp == NULL) { printf ("cannot get symbol 'in_dso2': %s\n", dlerror ()); exit (1); } result |= fp (); dlclose (h); } return result; #else return 0; #endif } #include "../test-skeleton.c"