#include <dlfcn.h> #include <stdio.h> #include <mcheck.h> int main (void) { int result = 0; void *p; mtrace (); /* First try to load an object which is a dependency. This should succeed. */ p = dlopen ("testobj1.so", RTLD_LAZY | RTLD_NOLOAD); if (p == NULL) { printf ("cannot open \"testobj1.so\": %s\n", dlerror ()); result = 1; } else { puts ("loading \"testobj1.so\" succeeded, OK"); dlclose (p); } /* Now try loading an object which is not already loaded. */ if (dlopen ("testobj5.so", RTLD_LAZY | RTLD_NOLOAD) != NULL) { puts ("succeeded in loading \"testobj5.so\""); result = 1; } else { /* Load the object and run the same test again. */ puts ("\"testobj5.so\" wasn't loaded and RTLD_NOLOAD prevented it, OK"); p = dlopen ("testobj5.so", RTLD_LAZY); if (p == NULL) { printf ("cannot open \"testobj5.so\" without RTLD_NOLOAD: %s\n", dlerror ()); result = 1; } else { puts ("loading \"testobj5.so\" succeeded, OK"); void *q = dlopen ("testobj5.so", RTLD_LAZY | RTLD_NOLOAD); if (q == NULL) { printf ("cannot open \"testobj5.so\": %s\n", dlerror ()); result = 1; } else { puts ("loading \"testobj5.so\" with RTLD_NOLOAD succeeded, OK"); dlclose (q); } if (dlclose (p) != 0) { printf ("cannot close \"testobj5.so\": %s\n", dlerror ()); result = 1; } else puts ("closing \"testobj5.so\" succeeded, OK"); } } return result; } extern int foo (int a); int foo (int a) { return 42 + a; }