#include <stdio.h> extern __thread signed short extern_tls_short;extern __thread float extern_tls_float; int main(void){    int errors = 0;     if (extern_tls_short != 1234 || extern_tls_float != 1.5f)        errors = 1;     extern_tls_short = -2222;    extern_tls_float = 2.5f;    extern_tls_float += 1.0f;     if (extern_tls_short != -2222 || extern_tls_float != 3.5f)        errors = 1;     printf("extern tls errors: %d\n", errors);    return errors;}