怎么在偷卷？
by TernaryTree @ 2024-03-01 22:56:13
~~捉一个野生 register int 大佬~~
by __ryp__ @ 2024-03-01 22:56:23
```cpp
.cpp:65:17: runtime error: member call on null pointer of type 'struct node'
.cpp:66:22: runtime error: member call on null pointer of type 'struct node'
.cpp:25:14: runtime error: member call on null pointer of type 'struct node'
.cpp:25:26: runtime error: member call on null pointer of type 'struct node'
.cpp:25:26: runtime error: member call on null pointer of type 'struct node'
.cpp:25:26: runtime error: member call on null pointer of type 'struct node'
.cpp:25:14: runtime error: member call on null pointer of type 'struct node'
```
by yukimianyan @ 2024-03-01 22:58:05
指针版这么短？
by 幸存者 @ 2024-03-01 22:59:42
fsanitize 查出来的全是空指针调用。
by yukimianyan @ 2024-03-01 23:00:21
@[Register_int](/user/406941)
```cpp
if (this) return s;
```
<https://stackoverflow.com/a/8842985>
**`this` can never be null**
by Argvchs @ 2024-03-01 23:10:43
@[Argvchs](/user/533270) 这么牛。
by Register_int @ 2024-03-02 06:52:04