C++: Round result of >> in SimpleRangeAnalysis#3445
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Fix for #3277 (see https://github.com/github/codeql-c-analysis-team/issues/59).
I don't think
&needs any changes as the current implementation sets bounds to either0or an existing bound with no calculation applied - so it should already be a suitably round number.For
>>we now round down.There are some edge cases for
int64types that we don't handle well (because QLfloor()fails on large numbers!) so such cases are simply excluded from the analysis.