Hi all, It seems that a new bug has crept in in recent versions of gpc (I use 2.1 / djgpp). I found it in recompiling a program which worked correctly some times ago. A simple program to display the bug is obtained by splitting the docdemos/operatordemo.pas program into a main and a unit: ----------------------------------------------------------------- program bugoper; uses uoper; var a, b, c: Vector3 = (1, 2, 3); begin c := a + b end. ----------------------------------------------------------------- unit uoper; interface type Vector3 = record x, y, z: Real; end; operator + (u, v: Vector3) w: Vector3; implementation operator + (u, v: Vector3) w: Vector3; begin w.x := u.x + v.x; w.y := u.y + v.y; w.z := u.z + v.z; end; end. ------------------------------------------------------------------- I obtain the following error mesage bugoper.pas: In main program: bugoper.pas:10: invalid operands to binary + bugoper.pas:10: invalid operands to binary + Everything is correct of course with the original program Maurice -- Maurice Lombardi Laboratoire de Spectrometrie Physique, Universite Joseph Fourier de Grenoble, BP87 38402 Saint Martin d'Heres Cedex FRANCE Tel: 33 (0)4 76 51 47 51 Fax: 33 (0)4 76 63 54 95 mailto:Maurice.Lombardi@ujf-grenoble.fr