gcc/testsuite/gcc.dg/tls/alias-1.c

   1 /* { dg-do link } */
   2 /* { dg-require-alias "" } */
   3 /* { dg-require-visibility "" } */
   4 /* { dg-require-effective-target tls_runtime } */
   5 /* { dg-add-options tls } */
   6 /* Test that encode_section_info handles the change from externally
   7    defined to locally defined (via hidden).   Extracted from glibc.  */
   8
   9 struct __res_state {
  10         char x[123];
  11 };
  12
  13 extern __thread struct __res_state bar
  14   __attribute__ ((tls_model ("initial-exec")));
  15
  16 int main()
  17 {
  18   bar.x[0] = 0;
  19   return 0;
  20 }
  21
  22 __thread struct __res_state foo;
  23 extern __thread struct __res_state bar
  24   __attribute__ ((alias ("foo")))
  25   __attribute__ ((visibility ("hidden")));