我在C和C++中使用相同的代码片段。

#include <stdio.h>

int main() {
    goto myLabel;
    printf("skipped\n");
myLabel:
    printf("after myLabel\n");
    return 0;
}

使用Visual Studio 2022 IDE和编译器。
C++汇编代码

0000000140001000  sub         rsp,28h  
0000000140001004  jmp         0000000140001014  
0000000140001006  jmp         0000000140001014  
0000000140001008  lea         rcx,[0000000140004230h]  
000000014000100F  call        0000000140001090  
0000000140001014  lea         rcx,[0000000140004240h]  
000000014000101B  call        0000000140001090  
0000000140001020  xor         eax,eax  
0000000140001022  add         rsp,28h  
0000000140001026  ret

C的汇编代码

0000000140001000  sub         rsp,28h  
0000000140001004  jmp         0000000140001012  
0000000140001006  lea         rcx,[0000000140006000h]  
000000014000100D  call        0000000140001090  
0000000140001012  lea         rcx,[0000000140006010h]  
0000000140001019  call        0000000140001090  
000000014000101E  xor         eax,eax  
0000000140001020  add         rsp,28h  
0000000140001024  ret

问题是为什么C++汇编代码使用2jmp指令，而C使用1。