Editing Stack overflow (section)

===Very large stack variables===
The other major cause of a stack overflow results from an attempt to allocate more memory on the stack than will fit, for example by creating local array variables that are too large. For this reason some authors recommend that arrays larger than a few kilobytes should be [[C dynamic memory allocation|allocated dynamically]] instead of as a local variable.<ref name="onlamp">{{cite web
  | last = Feldman
  | first = Howard
  | title = Modern Memory Management, Part 2
  | url = http://www.onlamp.com/pub/a/onlamp/2005/11/23/memory-management-2.html
  | date = 2005-11-23
  | access-date = 2007-08-14
  | archive-date = 2012-09-20
  | archive-url = https://web.archive.org/web/20120920112622/http://onlamp.com/pub/a/onlamp/2005/11/23/memory-management-2.html
  | url-status = dead
  }}</ref>

An example of a very large stack variable in [[C (programming language)|C]]:
<syntaxhighlight lang="c">
int foo() 
{
     double x[1048576];
}

</syntaxhighlight>

On a C implementation with 8 byte [[Double-precision floating-point format|double-precision floats]], the declared array consumes 8 [[megabytes]] of data; if this is more memory than is available on the stack (as set by thread creation parameters or operating system limits), a stack overflow will occur.