glibc/elf/tst-tlsmod17a.c

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#include <stdio.h>
#ifndef N
#define N 0
#endif
#define CONCAT1(s, n) s##n
#define CONCAT(s, n) CONCAT1(s, n)
__thread int CONCAT (v, N) = 4;
int
CONCAT (tlsmod17a, N) (void)
{
int *p = &CONCAT (v, N);
/* GCC assumes &var is never NULL, add optimization barrier. */
asm volatile ("" : "+r" (p));
if (p == NULL || *p != 4)
{
printf ("fail %d %p\n", N, p);
return 1;
}
return 0;
}