/* 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"))); int g_int = 34;int alias_int __attribute__((alias("g_int"))); #ifdef __leading_underscore# define _ "_"#else# define _#endif void asm_for_target(void) __asm__(_"target");int asm_int __asm__(_"g_int"); /* 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();  printf("g_int = %d\nalias_int = %d\nasm_int = %d\n", g_int, alias_int, asm_int);  inunit2();  return 0;}