Some exceptions in C language

Write the C program these days, problems continue, first write it down Double free or corruption literally means to repeat the release of space or crashes, usually because you have called the two-time, although you may not pass the same pointer two times to the But perhaps because the first free pointer represents a space that is out of bounds, the area that points to the second pointer is free. * * * Stack smashing detected * * *stacksmashing is a kind of gcc detection "buffer overflow" protection mechanism often due to the space you set up to produce this problem, the size of the array is set to small. 

Some exceptions in C language