vk: Use-after-free coverage #8273
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pixelflinger
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Nov 14, 2024
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| if (UTILS_UNLIKELY(ptr->isHandleConsideredDestroyed())) { | ||
| FILAMENT_CHECK_PRECONDITION(!ptr->isHandleConsideredDestroyed()) | ||
| << "Handle id=" << ptr->id << " (" << getTypeStr(ptr->restype) | ||
| << ") is being used after it has been freed"; | ||
| } |
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you don't need the if here, FILAMENT_CHECK_PRECONDITION already does all the likely/unlikely shenanigans
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I was trying to avoid hitting the switch in getTypeStr unless necessary, hence the roundabout logic here.
Do you think it's worth it or not? (or maybe it just going to be speculatively executed anyways?).
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Actually, FILAMENT_CHECK_PRECONDITION is pretty sick. If the condition is false, it will not execute at all what comes after the <<. I know it's magic.
poweifeng
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no longer needed |
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Accidentally closed. |
To allow for use-after-free discovery with ref-counting, we keep a bit to indicate whether the handle is considered destroyed by Filament. We assert against "cast"-ing a destroyed handle.
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pixelflinger
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Dec 12, 2024
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To allow for use-after-free discovery with ref-counting, we keep a bit to indicate whether the handle is considered destroyed by Filament. We assert against "cast"-ing a destroyed handle.