elf/tst-audit2.c

   1 /* Test case for early TLS initialization in dynamic linker.  */
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 #if HAVE___THREAD
   8 # define MAGIC1 0xabcdef72
   9 # define MAGIC2 0xd8675309
  10 static __thread unsigned int magic[] = { MAGIC1, MAGIC2 };
  11 #endif
  12
  13 #undef calloc
  14
  15 /* This calloc definition will be called by the dynamic linker itself.
  16    We test that it has initialized our TLS block by the time it does so.  */
  17
  18 void *
  19 calloc (size_t n, size_t m)
  20 {
  21 #if HAVE___THREAD
  22   if (magic[0] != MAGIC1 || magic[1] != MAGIC2)
  23     {
  24       printf ("{%x, %x} != {%x, %x}\n", magic[0], magic[1], MAGIC1, MAGIC2);
  25       abort ();
  26     }
  27   magic[0] = MAGIC2;
  28   magic[1] = MAGIC1;
  29 #endif
  30
  31   n *= m;
  32   void *ptr = malloc (n);
  33   if (ptr != NULL)
  34     memset (ptr, '\0', n);
  35   return ptr;
  36 }
  37
  38 int
  39 main (void)
  40 {
  41 #if HAVE___THREAD
  42   if (magic[1] != MAGIC1 || magic[0] != MAGIC2)
  43     {
  44       printf ("{%x, %x} != {%x, %x}\n", magic[0], magic[1], MAGIC2, MAGIC1);
  45       return 1;
  46     }
  47 #endif
  48
  49   return 0;
  50 }