[Mono-bugs] [Bug 450542] New: Invalid IL code
bugzilla_noreply at novell.com
bugzilla_noreply at novell.com
Mon Dec 1 12:22:02 EST 2008
https://bugzilla.novell.com/show_bug.cgi?id=450542
Summary: Invalid IL code
Product: Mono: Runtime
Version: 2.2.x
Platform: Other
URL: http://limada.sourceforge.net/
OS/Version: Windows XP
Status: NEW
Severity: Normal
Priority: P5 - None
Component: JIT
AssignedTo: lupus at novell.com
ReportedBy: lytico at users.sourceforge.net
QAContact: mono-bugs at lists.ximian.com
Found By: ---
Description of Problem:
got: System.InvalidProgramException: Invalid IL code
Maybe there is a problem with generic parameters in combination with nullable,
both of them as members of a static class. But I am not sure about this
"analysis"
Testcase:
static class TestProgram {
[STAThread]
static void Main() {
if (Problem<string, string>.BIsAClazz) {
Console.Out.WriteLine("no problem 1");
} else {
Console.Out.WriteLine("no problem 2");
}
}
}
public class Problem<A, B> {
protected static B NullB = default(B);
private static Nullable<bool> _BIsA = null;
public static bool BIsAClazz {
get {
_BIsA = typeof(A).IsAssignableFrom(typeof(B));
return _BIsA.Value;
}
}
Actual Results:
Unhandled Exception: System.InvalidProgramException: Invalid IL code in
Tests.Problem`2:get_BIsAClazz (): IL_0028: call 0x0a00000b
at Tests.TestProgram.Main () [0x00000]
Expected Results:
no problem 1
How often does this happen?
always
Additional Information:
This does NOT make an error:
public class Problem<A, B> {
private static Nullable<bool> _BIsA = null;
public static bool BIsAClazz {
get {
_BIsA = typeof(A).IsAssignableFrom(typeof(B));
return _BIsA.Value;
}
}
protected static B NullB = default(B);
}
so maybe it depends on the order of execution
cheers,
lytico
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