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DEAD STORE reports many harmless cases like int i = 0xFFFFFFFF; i = SomeFunc(); #1083

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lucmann opened this issue Apr 10, 2019 · 5 comments
Open

DEAD STORE reports many harmless cases like int i = 0xFFFFFFFF; i = SomeFunc(); #1083

lucmann opened this issue Apr 10, 2019 · 5 comments
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c good first task help wanted

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@lucmann
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@lucmann lucmann commented Apr 10, 2019

infer version v0.15.0
in my case, 0xFFFF or 0xFFFFFFFF is a common initializer and there are a lot of this semantics in our code. I would like to ignore those harmless. but if I turn off liveness checker, I worry about missing some truely harmful bugs. Does Infer provide some filtering option or method?
@martintrojer
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@martintrojer martintrojer commented Apr 17, 2019

Hi, if this is Java you can use @SuppressLint("infer") annotation. https://fbinfer.com/support

If its not java there is currently no support for this.
@jvillard
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@jvillard jvillard commented Apr 17, 2019

This function does what you want but only whitelists x = 0. I'd welcome a pull request to make the set of constants configurable by adding an option to infer/src/base/Config.ml.
@jvillard jvillard reopened this Apr 17, 2019
@lucmann
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@lucmann lucmann commented Apr 22, 2019

thanks! the whitelist can be added by an option. that's handful. I'll dig it.
@XVilka
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@XVilka XVilka commented Mar 4, 2020

Any updates on this one? @lucmaa
@lucmann
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@lucmann lucmann commented Mar 4, 2020

sorry that there is none of it yet. @XVilka
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@XVilka @jvillard @martintrojer @lucmann
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