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Attention: there is clearly a bug in the code when it uses `v.wrapping_add(1) > 0` when `v` is a `usize`-- because the only way for this condition to be false is for `v` to be `usize::MAX` -- and this will not be consistent between x32 and x64 versions. Moreover, there is even a case of `wrapping_add(2)` -- which would only pass if the original is `usize::MAX-1`.
Given all this, this expression does not make any sense, and should be replaced with `m.alloc_cell(num_bytes + 2)`:
```rust
if num_bytes + 2 > 0 {
m.alloc_cell(num_bytes + 2)
} else {
AllocF::AllocatedMemory::default()
}
```
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Reworked hq.rs to be simpler.
I found what seems like a bug in the code when it uses
v.wrapping_add(1) > 0whenvis ausize-- because the only way for this condition to be false is forvto beusize::MAX-- and this will not be consistent between x32 and x64 versions. Moreover, there is even a case ofwrapping_add(2)-- which would only pass if the original isusize::MAX-1.Given all this, this expression does not make any sense, and should be replaced with
m.alloc_cell(num_bytes + 2):