The core code uses about 330 lines (.c+.h) and can now be found, without the aStrA part, there :

data_stack.tgz

It supports three options:

• DATA_STACK_ADJUSTABLE : allows the top object to be grown or shrunk after new().
• DATA_STACK_DESTRUCTOR : an "object" can be associated with a function pointer, called in reverse order "like a local atexit()"
• DATA_STACK_MAXALLOC : collect maximum stack depth/usage.

Two example programs are provided.