【leetcode报错】报错信息及原因记录

目录

• x
• 1. runtime error: reference binding to misaligned address 0xbebebebebebec0ba for type 'int', which req
• 2. solution.c: In function ‘isValidSerialization’ Line 25: Char 1: error: control reaches end of non-void function [-Werror=return-type] [solution.c] } ^ cc1: some warnings being treated as errors
• 3. Line 15: Char 5: error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type]
• 4.Line 53: Char 16: runtime error: member access within null pointer of type 'ListNode' (solution.cpp)
• 5.error: reference to non-static member function must be called
• 6.Line 24: Char 33: runtime error: member access within null pointer of type 'TreeNode' (solution.cpp)SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior prog_joined.cpp:33:33

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1. runtime error: reference binding to misaligned address 0xbebebebebebec0ba for type 'int', which req

这种情况一般为数组越界访问，可以检查一下函数开头是否加了特殊情况（数组为空、栈为空等）判断，避免在数组为空的情况下后续继续对其操作。

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2. solution.c: In function ‘isValidSerialization’ Line 25: Char 1: error: control reaches end of non-void function [-Werror=return-type] [solution.c] } ^ cc1: some warnings being treated as errors

leetcod判题系统如果不是void类型的函数，需要在任何情况下都有返回值，例如不能把return写在循环里的if语句，即使每种情况都讨论了，也需要有一个默认的return语句（不经过任何循环if语句嵌套）；

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3. Line 15: Char 5: error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type]

同2，必须每中情况下都有返回值，补一个返回值即可。

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4.Line 53: Char 16: runtime error: member access within null pointer of type 'ListNode' (solution.cpp)

SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior prog_joined.cpp:62:16
一般是引用了空指针，例如ListNode *pre，pre=NULL,但是却使用了pre->next;

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5.error: reference to non-static member function must be called

报错的字面意思：调用了非静态函数成员，但并不是通过类对象来调用的，因此可以把这个调用的函数改为静态函数，或者将这个函数定义在这个类之外；

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6.Line 24: Char 33: runtime error: member access within null pointer of type 'TreeNode' (solution.cpp)SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior prog_joined.cpp:33:33

试图使用空指针，可能是树、链表，可以添加判断条件。