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ERROR_INVALID_BLOCK
The supplied memory block is not valid
ERROR_INVALID_BLOCK indicates that a block passed to a memory-management operation cannot be recognized as a valid allocation. Common causes include freeing the wrong pointer, freeing an interior address, double-free, and mixing different allocators.
Debugging
- Record the allocation and release stacks for the pointer.
- Verify that allocation and deallocation use the same runtime and heap.
- Check object ownership across DLL boundaries.
- Use heap diagnostics to detect the first invalid write or free.
Resolution
Correct the allocation contract. Retrying the same free or heap operation can cause further corruption and should be avoided.
References
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