Electric Fence stops your program on the exact instruction that overruns a malloc memory buffer. GDB will then display the source-code line that causes the bug. It works by using the virtual-memory hardware to create a red-zone at the border of each buffer - touch that, and your program stops.

a barrier that uses a painful or even lethal high-voltage electric shocks to deter animals or people from crossing a boundary

an effective predator barrier

a good choice for garden beds

an effective way to keep bears out of orchards, gardens, compost piles, and beehives

a proven method to stop them

a very effective method to keep varmits at bay

A long position in an underlying instrument which sells forward at a premium is combined with a long lookback put on the full value of the underlying and a short lookback call covering enough of the notional value of the underlying to generate a premium equal to the put premium.

an incomplete circuit until needed

a less-than-ideal environment on which to conduct electricity

a complete system and care should be taken to ensure that all components are properly matched for maximum efficiency