On Feb 16, 2004, "John V. Pope" <jpope_rhn@xxxxxxxxx> wrote: > The following code is a simple demonstration of the bug and should compile without errors: As others have pointed out, the meaning this had with older versions of GCC is not what you expect: > isprint(a[x]) ? b[x] = a[x]: b[x] = '.'; this meant: (isprint(a[x]) ? (b[x] = a[x]): b[x]) = '.'; i.e., it would assign '.' to b[x] regardless of the result. That was because, if both branches of a ternary operator were lvalues, GCC would, as an extension, consider the result of the expression to be an lvalue as well. Precisely because of coding errors like the one you mention, this extension was removed, so now you get an error, as you should always have. And now you know the code is broken and has to be fixed. -- Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/ Happy GNU Year! oliva@{lsd.ic.unicamp.br, gnu.org} Red Hat GCC Developer aoliva@{redhat.com, gcc.gnu.org} Free Software Evangelist Professional serial bug killer
