求解，gcc内联汇编标号编译报错

Question

 unsigned long strcpy0(char* dst,const char* src)
{
    __asm__ __volatile__
        (
         ".intel_syntax noprefix\n"
         "POS2:\n"
         "lodsb\n"
         "stosb\n"
         "test al,al\n"
         "jnz POS2\n"
         :
         :
         :"rax","bl"
         );
}

上面代码使用gcc编译的时候报错，请问该怎么解决：
gcc -masm=intel -O3 -c -o test.o test.c
test.c: Assembler messages:
test.c:7: Error: symbol POS2' is already defined
test.c:7: Error: symbolPOS2' is already defined
test.c:7: Error: symbol `POS2' is already defined

Answer 1

错误信息说标号POS2重复定义了，可能你在源码其他位置也定义了这个符号。我把你这段代码复制下来进行编译时是正常的，并没有报错。