// { dg-do assemble } // g++ 1.37.1 bug 900520_03 // The C++ Reference Manual says (in section 8.2.4): // When an identifier of array type appears in an expression, except // as the operand of sizeof or & or used to initialize a reference, // it is converted into a pointer to the first member of the array. // One must assume from the verbage, that when the name of a non-const array // object appears in one of the exempted contexts mentioned in this passage, // that it is *not* automatically converted into a pointer value, but rather // that it remains as an array type value, and that it may therefore also // still be an lvalue, and may be used to initialize references. // As the following code demonstrates, g++ does in fact treat the names // of non-const array objects as valid initializers for reference-to-array // type object in some (but not all) contexts. // The exception is that g++ does not allow names which designate objects // on incomplete array types to be used as actual parameters in function // calls where the corresponding formal parameter is of a reference-to-array // type. // g++ does however allow other similar sorts of initializations of non-formal // reference objects. // 5/16/94 (jason): The 1/25/94 WP explicitly states in section 8.3.5 that // parameter types may not contain pointers or references to arrays of unknown // bound. g++ is correct. // keywords: reference types, array types, initialization, parameter passing typedef int u_array[]; typedef u_array &u_array_ref; void take_u_array_ref (u_array_ref arg) { } // { dg-error "" } reference to array of unknown bound in parmtype extern u_array u_array_gbl_obj; u_array_ref u_array_ref_gbl_obj0 = u_array_gbl_obj; // OK void test_local_initialization () { u_array_ref u_array_ref_lcl_obj0 = u_array_gbl_obj; // OK } void test_passing () { take_u_array_ref (u_array_gbl_obj); }