1. 解释什么是空指针解引用(null pointer dereference) 空指针解引用是指在程序执行过程中,尝试访问或操作一个未被初始化或已被设置为null的指针所指向的内存位置。在Java、C、C++等语言中,这会导致运行时错误,因为程序试图访问一个不存在的内存地址。 2. 列举导致空指针解引用的常见原因 未初始化的指针或对象引...
In file:TimeStampRequest.java, there is a potential case of null pointer dereference. In methodvalidate(), there is a call toconvert(), whichreturns nullif parameterorigis null. privateSetconvert(Setorig) {if(orig==null) {returnorig;// Returns null if input is null}Setcon=newHashSet(orig...
Overview In file:MustCallConsistencyAnalyzer.java, there is a potential case of null pointer dereference. In methodincrementMustCallImplinside classMustCallConsistencyAnalyzer, there is a call toTypesUtils.getTypeElement. ThengetQualifiedNamemethod is invoked on the supposedly returnedTypeElementobject. pri...
[M C NP] Possible null pointer dereference [NP_NULL_ON_SOME_PATH] There is a branch of statement that,if executed,guarantees that a null value will be dereferenced, which would generate aNullPointerExceptionwhen the code is executed. Of course, the problem might be that the branch or state...
A null-dereference crash occurred upon calling find_entry()-->strlen() due to the NULLed procname. Raw [4816637.612601] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [4816637.612606] PGD 0 P4D 0 [4816637.612611] Oops: 0000 [#1] SMP NOPTI [4816637.612614] CPU: 0 PI...
if (data == NULL || dataSize < 0) { return false; }if (m_pDataToSend != NULL) { delete[] m_pDataToSend; } m_pDataToSend = NULL; m_pDataToSend = new BYTE[dataSize]; if (m_pDataToSend != NULL) { memcpy_s(m_pDataToSend, dataSize, data, dataSize); m_dataToSend...
Dereference of IntPtr (get value at address of), and C# to C++ questions. Deselect all items in listview C++ Destroying child window without parent WIN32 API detect mouse button state Detect target architecture endianess (in preprocessor time) Detecting when screen is locked Determine if string...
Version 2 is attached. That said, I'm not sure we actually *need* to change this. I understand and partly agree. But it appears that with these changes, the dereference of a null pointer is impossible even in builds where assertions are ...
V522. Possible null pointer dereference. V523. The 'then' statement is equivalent to the 'else' statement. V524. It is suspicious that the body of 'Foo_1' function is fully equivalent to the body of 'Foo_2' function. V525. Code contains collection of similar blocks. Check items X, ...
V522. Possible null pointer dereference. V523. The 'then' statement is equivalent to the 'else' statement. V524. It is suspicious that the body of 'Foo_1' function is fully equivalent to the body of 'Foo_2' function. V525. Code contains collection of similar blocks. Check items X, ...