/* Check semantics of various constructs to generate renamed symbols.  */extern int printf (const char *, ...);void target(void);void target(void) {    printf("in target function\n");} void alias_for_target(void) __attribute__((alias("target")));#ifdef __leading_underscorevoid asm_for_target(void) __asm__("_target");#elsevoid asm_for_target(void) __asm__("target");#endif /* This is not supposed to compile, alias targets must be defined in the   same unit.  In TCC they even must be defined before the referencevoid alias_for_undef(void) __attribute__((alias("undefined")));*/ extern void inunit2(void); int main(void){  target();  alias_for_target();  asm_for_target();  inunit2();  return 0;}