Why Can\'t I Catch Null Pointer Exceptions in C ?

Why Can't I Catch Null Pointer Exceptions?

In your C code, you're attempting to handle null pointer dereferencing by catching an elusive "null pointer exception." However, C doesn't have such a mechanism in its exception handling system.

When you access memory at a null pointer, as in your example, C doesn't generate an exception. Instead, it invokes undefined behavior, meaning anything could happen: your program could crash, produce erroneous results, or behave unpredictably.

To avoid these undesirable consequences, you need to manually detect and handle null pointer dereferencing within your code. There's no built-in exception to shield you from this potential hazard.

Certain implementations, such as Visual C , may allow you to convert system-level exceptions into C exceptions. However, this non-standard functionality comes with performance penalties and should generally be avoided.

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