544                 func_ref,  in verify_entity_references()
548                 self.verify_func_ref(inst, func_ref, errors)?;  in verify_entity_references()
550                 self.verify_callee_patchability(inst, func_ref, opcode, errors)?;  in verify_entity_references()
559                 func_ref,  in verify_entity_references()
564                 self.verify_func_ref(inst, func_ref, errors)?;  in verify_entity_references()
578             FuncAddr { func_ref, .. } => {  in verify_entity_references()
579                 self.verify_func_ref(inst, func_ref, errors)?;  in verify_entity_references()
914         func_ref: FuncRef,  in verify_callee_patchability()
923         } = self.func.dfg.ext_funcs[func_ref];  in verify_callee_patchability()
1432             CallInfo::Direct(func_ref, args) => {  in typecheck_variable_args()
1433                 let sig_ref = self.func.dfg.ext_funcs[func_ref].signature;  in typecheck_variable_args()
1440             CallInfo::DirectWithSig(func_ref, sig_ref, args) => {  in typecheck_variable_args()
1441                 let expected_sig_ref = self.func.dfg.ext_funcs[func_ref].signature;  in typecheck_variable_args()
1657                 func_ref,  in typecheck_return()
1660                 let sig_ref = self.func.dfg.ext_funcs[func_ref].signature;  in typecheck_return()