C++ and Beyond 2012

• error handling is about error in the inputs, not bug.
  • hardware work
  • program is correct
  • opposed tp general reliability
  • but consider - network error
    • device error
    • data error

Hypothesis

• bad error handling engenders errors
• insufficient testing make improbable error scenario
• legit error lead to corrupt programs

Expected

• either T
• or the reason T was not created

Dislocation + Nestng = Fail

• scope_guard
  • encapsulate control flow
  • scope_guard composition
  • put action at top level