Bug Report T591183
Visible to All Users

Static Code Analysis - The "Possible System.NullReferenceException" diagnostics do not always take Null-Check into account

created 7 years ago

Please see following code examples. In variants Foo1 and Bar1 there is a false positive. Bar1 and Bar2 are nearly the same, but Bar2 does not produce false positive.

Visual Basic
Public Class Class1 Function Foo1(param As String) As Integer If param Is Nothing Then Return 0 Dim val As String = param 'CRR0027 Return val.Length End Function Function Bar1(param As String) As Integer If param Is Nothing Then Return 0 param &= String.Empty Dim val As String = param 'CRR0027 Return val.Length End Function Function Bar2(param As String) As Integer If param Is Nothing Then Return 0 param = param & String.Empty Dim val As String = param 'No CRR0027 Return val.Length End Function End Class
Comments (1)
DevExpress Support Team 7 years ago

    Hi Robert,

    Thank you for your report. I have reproduced this problem locally. We will fix it in our future builds.

    Answers approved by DevExpress Support

    created 7 years ago

    We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.

    Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.

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