cachegrind/tests/dlclose.c

   1 /* This exercises the code that was causing this bug:
   2
   3      valgrind: vg_cachesim.c:389 (get_BBCC): Assertion `((Bool)0) == remove'
   4      failed.
   5
   6    in Cachegrind 1.0.0 and 1.0.1, that was caused by unloading symbols before
   7    invalidating translations.
   8 */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <dlfcn.h>
  13
  14 int main(int argc, char **argv) {
  15    void *handle;
  16    void (*myprint)(void);
  17    char *error;
  18
  19    handle = dlopen ("./myprint.so", RTLD_LAZY);
  20    if (!handle) {
  21        fputs (dlerror(), stderr);
  22        exit(1);
  23    }
  24
  25    myprint = dlsym(handle, "myprint");
  26    if ((error = dlerror()) != NULL)  {
  27        fprintf (stderr, "%s\n", error);
  28        exit(1);
  29    }
  30
  31    (*myprint)();
  32
  33    /* Assertion failure was happening here */
  34    dlclose(handle);
  35
  36    return 0;
  37 }
  38