1  /* Check alignment of TLS variable.  */
       2  #include <dlfcn.h>
       3  #include <stdint.h>
       4  #include <stdio.h>
       5  #include <stdlib.h>
       6  
       7  #define AL 4096
       8  struct foo
       9  {
      10    int i;
      11  } __attribute ((aligned (AL)));
      12  
      13  static __thread struct foo f;
      14  static struct foo g;
      15  
      16  
      17  extern int in_dso1 (void);
      18  
      19  
      20  static int
      21  do_test (void)
      22  {
      23    int result = 0;
      24  
      25    int fail = (((uintptr_t) &f) & (AL - 1)) != 0;
      26    printf ("&f = %p %s\n", &f, fail ? "FAIL" : "OK");
      27    result |= fail;
      28  
      29    fail = (((uintptr_t) &g) & (AL - 1)) != 0;
      30    printf ("&g = %p %s\n", &g, fail ? "FAIL" : "OK");
      31    result |= fail;
      32  
      33    result |= in_dso1 ();
      34  
      35    void *h = dlopen ("tst-tlsmod14b.so", RTLD_LAZY);
      36    if (h == NULL)
      37      {
      38        printf ("cannot open tst-tlsmod14b.so: %m\n");
      39        exit (1);
      40      }
      41  
      42    int (*fp) (void) = (int (*) (void)) dlsym (h, "in_dso2");
      43    if (fp == NULL)
      44      {
      45        puts ("cannot find in_dso2");
      46        exit (1);
      47      }
      48  
      49    result |= fp ();
      50  
      51    return result;
      52  }
      53  
      54  #include <support/test-driver.c>