[Mono-bugs] [Bug 564376] New: invalid code generated for indexers on valuetypes

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Mon Dec 14 05:45:57 EST 2009



           Summary: invalid code generated for indexers on valuetypes
    Classification: Mono
           Product: Mono: Compilers
           Version: SVN
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: C#
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: vargaz at gmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


public struct Breaks {

    private double val;

    public double this[int i, int j] {

        get { return val; }

        set { val = value; }


    public Breaks(double val)
    { this.val = val; }


public class Tester {

    public static void Main(string[] args)

        Breaks b = new Breaks(3.0);

        b[0, 0] += 3.0;



Expected results: works.
Actual results: throws a NullReferenceException.

mono --verify-all bug.exe prints:
Unhandled Exception: System.Security.VerificationException: Invalid type at
stack for ldind_ref expected object byref operation at 0x001b

This breaks mono/tests/test-dup-mp.cs in the runtime tests.

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