Aviod the problem of NULL pointer derefernece

Attempt to return a pointer to memory that has been freed.

Test of tool ability to identify a NULL pointer dereference.

The test case shows a use of a allocated memory after freed.

An example to prevent heap overflow.

Using the value of an unitialized variable is not safe. (from TCCLASP-5_6_4_10)

The test case shows avoiding improper null termination with a buffer address type complexity.

The test case shows a weakness of improper null termination with a buffer address type complexity.

Buffer overflow if the input is not validated. Every operation may write outside the bound of the statically allocated character array. From \"Secure Coding in C and C++\" by Robert C. Seacord. Page 28, Figure 2-2.

Using the value of an unitialized variable is not safe.

This is a test

The accidental addition of a data-structure sentinel can cause serious programing logic problems. (from TCCLASP-5_6_7_10)

Fixed strcpy to prevent stack overflow.

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory.

The test cases shows hard-coded password is not used.

Allocated memory is deleted after use.

Allocated memory is deleted after use. There will be no memory leak.

The test cases shows hard-coded passwords is used.

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack. In the case of C++, misusing container vector could also cause stack overflow.

A software system that accepts and executes input in the form of operating system commands (e.g. system(), exec(), open()) should examine the input before its use.

Assume all input is malicious. Use an appropriate combination of black lists and white lists to ensure only valid and expected input is processed by the system.

If too few arguments are sent to a function, the function will still pop the expected number of arguments from the stack. Potentially, a variable number of arguments could be exhausted in a function as well. (from TCCLASP-5_6_2_10) (CWE 234) Note: some compilers that check whether too few argume...

The test case shows a use of a allocated memory after freed.

Pointer is initialized and checked before use.

Uninitialized variable