github-vet / github-vet/rangeloop-pointer-findings

yellowmoneybank/tss: pkg/cheaterDetection/cheaterDetection.go; 8 LoC

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Description

Found a possible issue in [yellowmoneybank/tss](https://www.github.com/yellowmoneybank/tss) at [pkg/cheaterDetection/cheaterDetection.go](https://github.com/yellowmoneybank/tss/blob/871610d3efbb795e4a833019146b996e7302eb7b/pkg/cheaterDetection/cheaterDetection.go#L49-L56)

Below is the message reported by the analyzer for this snippet of code. Beware that the analyzer only reports the first issue it finds, so please do not limit your consideration to the contents of the below message.

>

[Click here to see the code in its original context.](https://github.com/yellowmoneybank/tss/blob/871610d3efbb795e4a833019146b996e7302eb7b/pkg/cheaterDetection/cheaterDetection.go#L49-L56)

Click here to show the 8 line(s) of Go which triggered the analyzer.

```go
for index, hash := range hashes {
exp := big.NewInt(int64(2 * (index - 1)))
p := (new(big.Int)).Set(prime)
p.Exp(p, exp, nil)

p.Mul(p, &hash)
tNew = tNew.Add(tNew, p)
}

```

Click here to show extra information the analyzer produced.

```
No path was found through the callgraph that could lead to a function which writes a pointer argument.

No path was found through the callgraph that could lead to a function which passes a pointer to third-party code.

root signature {Mul 2} was not found in the callgraph; reference was passed directly to third-party code
```

Leave a reaction on this issue to contribute to the project by classifying this instance as a **Bug** :-1:, **Mitigated** :+1:, or **Desirable Behavior** :rocket:
See the descriptions of the classifications [here](https://github.com/github-vet/rangeclosure-findings#how-can-i-help) for more information.

commit ID: 871610d3efbb795e4a833019146b996e7302eb7b

Contributor guide

No contributing guide indexed for this repository

Research direction

Inspect pkg/cheaterDetection/cheaterDetection.go around lines 49-56 and read the analyzer output about the range-loop variable hash. Determine whether passing &hash to Mul is a bug, mitigated, or desirable behavior, then leave the corresponding reaction on the issue.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
devtools
Issue type
Bug
Difficulty
1/5
Estimated time
Under an hour
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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