What are the limitations on stack memory size when executing programs?

The stack memory size is limited and depends on the operating system, architecture, and compiler settings. Typically, the stack is limited to a few megabytes (e.g., 1-8 MB on most systems). Exceeding this limit causes a stack overflow.

Stack size limitations are due to the fact that the stack is allocated in a contiguous block of fixed size, and recursion depth or local variable size should not exceed this limit.

In Linux, for example, you can view and change the stack size using the ulimit -s command.

Example of checking and setting stack size in Linux:

ulimit -s       # show current stack size in kilobytes
ulimit -s 8192  # set stack size to 8 MB

In C/C++, you can control thread stack size through parameters like pthread_attr_setstacksize.