What if there are Segmentation fault errors in Linux programming?

This article will explain in detail how to do Segmentation fault errors in Linux programming. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Some developers found a Segmentation fault error when they debugged with GDB while programming under Linux. This error is mainly caused by accessing the wrong memory segment, which may be because there is no permission or the memory segment does not exist. How to deal with this problem?

The methods are as follows:

How did this mistake come about? It turns out that you are defining a pointer of type char, and then perform string-related operations on the pointer directly. For example:

Char * C1

For (iFig 0; I "nternati +)

{

* C1 = getchar ()

C1cm +

}

The meaning of the code is something like this, which is a problem that many developers will make. This pointer is dangerous, ah, it should be treated with caution. Take this as an example. We do not know where the pointer points to. If the written data covers the key area data, it may have disastrous consequences. This is where you are not supposed to visit. What is the solution? tell the pointer to go where it should be, and I use malloc to request a space for the string the pointer is going to point to, so it will indicate that the system allocates a safe space and will not allocate critical areas of memory to you. So you can operate safely.

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