Watch-Points

• A watch-point makes the program stop when an expression is true, regardless of the function in which it happens.
• A basic example: 'watch a == 1' makes the program stop when variable 'a' has the value... '1'.
• Checking when my memory gets over-written with a zero byte:

  watch *(char*)0x65476 == 0

• Watch-points and other break-points are all seen using 'info break' or 'info watch'.
• And use 'delete <watch-point number>' to delete a watch-point, just like with a break-point.

Originally written by guy keren