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Incorrect cast behaviour in LiteralAnalyser #40

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lerno opened this issue Oct 27, 2018 · 2 comments

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bug

Collaborator

lerno commented Oct 27, 2018

cast(3) => will cast the expression to a 31 bit integer.
cast(2147483648) => 0
cast(2147483647) => -1
cast(1073741823) = 1073741823
cast(1073741824) = -1073741824

The cast is using getIntegerWidth to set the resulting width, causing this issue.

Member

bvdberg commented Oct 30, 2018

Which syntax do you use exactly then? Because currently cast needs a generics-like argument, like:
cast<u32>(2147483648)

Collaborator Author

lerno commented Oct 30, 2018

It's in the implicit casts in the LiteralAnalyser when mixing uXX with iXX values.

bvdberg added the bug label

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