关于 Segmentation fault

由于程序运行老是有 Segmentation fault 的错误，即使是象上一篇文章中讲的那样改了，也还是可能碰到，于是上网找了找，发现了这样一些东西。

首先是一段英文的东西，是最先找到的，大概就是说是因为指针，数组的不恰当使用造成分段内存访问时的错误，这里就不翻译了。

One of the most common problems when making software is errors like "Segmentation fault", also called SegFault. Here is what a SegFault is. Virtual memory in a computer can be created in 2 ways: pages or segments. Paging means that the memory is divided in pages of equal size, containing words of memory in it. Segmentation means that every process has a segment of memory of needed size, with gaps of empty memory blocks between the segments. The operating system knows the upper limit of every segment, and every segment begins at a virtual address 0. When a program accesses a memory block, it calls a virtual address that the Memory Management Unit (MMU) maps to a real address. If the operating system sees that the requested address doesn't match any valid address in the segment, it will send a signal to the process terminating it. SegFaults are the direct result of a memory error. The program has a bad pointer, a memory leak or any kind of error that makes it access the wrong memory address. To correct these errors you need to check pointers and arrays for errors.

进一步查找，发现有这样一个帖子，这里我就不帖原文了，大家要看可以到这里看看，应该还是有帮助的

http://www.linuxforum.net/forum/gshowflat.php?Cat=&Board=program&Number=414847&page=0&view=collapsed&sb=5&o=all&fpart=

似乎知道问题，那么去解决问题就可以了，但是，去看看那个编译能通过但不能执行的ezx的hello的例子，还是搞不清那个地方就有指针或者数组的错误，先写到这，等问题解决了再来吧。