.assembly extern mscorlib { .ver 2:0:0:0 .publickeytoken = (B7 7A 5C 56 19 34 E0 89 ) } .assembly 'boxing_tests' { } .module 'boxing_tests' .class public auto ansi beforefieldinit Driver extends [mscorlib]System.Object { .method public static hidebysig default !!T Foo (object o) cil managed { .maxstack 8 ldarg.0 isinst !!0 ret } .method public static hidebysig default int32 Main () cil managed { .entrypoint .maxstack 4 .locals init () ldnull call !!0 class Driver::Foo (object) pop ldc.i4.0 ret } }