Miri function identity hack: account for possible inlining

Author: RalfJung

src/common.rs

@@ -221,7 +221,7 @@ impl<'gcc, 'tcx> ConstMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
 }
  value
 }
-GlobalAlloc::Function(fn_instance)=> self.get_fn_addr(fn_instance),
+GlobalAlloc::Function{ instance, .. }=> self.get_fn_addr(instance),
 GlobalAlloc::VTable(ty, trait_ref) => {
 let alloc = self
 .tcx