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My debugging experience today: Quantum Debugging (fedia.io)

submitted 2 months ago by [email protected] to c/[email protected]

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[–] [email protected] 158 points 2 months ago (12 children)

Aren't those almost always race condition bugs? The debugger slows execution, so the bug won't appear when debugging.

[–] [email protected] 9 points 2 months ago (1 children)

sometimes it's also bugs caused by optimizations.

[–] [email protected] 2 points 2 months ago

And that's where Release with debug symbols comes in. Definitely harder to track down what's going on when it skips 10 lines of code in one step though. Usually my code ends up the other way though, because debug mode has extra assertions to catch things like uninitialized memory or access-after-free (I think specifically MSVC sets memory to 0xcdcdcdcd on free in debug mode).

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