[Mono-dev] Having trouble getting tail. callvirt to work

[Stefan O'Rear]

The following small CIL demo blows the stack on Mono 2.9/78b8d38 with
both the LLVM and integrated JIT backends.  What am I doing wrong?

If callvirt is replaced with call, the program runs in constant stack
space.  If callvirt is replaced with calli (passing in the ldftn value
as a parameter), the program fails exactly as it does for callvirt.

-Stefan

.assembly extern mscorlib {}

.assembly 'test' { }

.class public auto C
{
    .method public hidebysig specialname rtspecialname
           instance default void '.ctor' ()  cil managed
    {
        .maxstack 8
        ldarg.0
        call instance void class [mscorlib]System.Object::'.ctor'()
        ret
    }

    .method public virtual instance void Fun()
    {
        ldarg.0
        tail.
        callvirt instance void class C::Fun()
        ret
    }
}

.method static public void main() cil managed
{
    .entrypoint
    .maxstack 1
    newobj instance void class C::'.ctor'()
    callvirt instance void class C::Fun()
    ret
}
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