Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!columbia!read.columbia.edu!kearns2
From: kearns2@read.columbia.edu (Steve Kearns)
Newsgroups: comp.lang.c++
Subject: Re: default argument bug in 1.2!
Message-ID: <6411@columbia.edu>
Date: 24 Jul 89 18:46:08 GMT
References: <503@gill.UUCP> <6409@columbia.edu> <1505@ns.network.com>
Sender: news@columbia.edu
Reply-To: kearns2@read.UUCP (Steve Kearns)
Organization: Columbia University Department of Computer Science
Lines: 53

>I have compiled a test case, and found that this does not seem to be
>an error as simple as you have stated.  The following complete program
>works correctly and prints "bill != -1".
>
>---------------------------
>//test.c
>#include <stdio.h>
>
>class bar{
>public:
>  void foo(int joe, int bill= -1);
>};
>
>void bar.foo(int joe, int bill= -1) {
>  if (bill == -1) printf("bill == -1\n");
>  else printf("bill != -1\n");
>}
>
>main() {
>  bar b;
>  b.foo(23,24);
>}
>----------------------------
>
>Jim
>hughes@network.com


Actually, this program does demonstrate the bug on my copy
of CC (#ident  "@(#)cfront:CC  1.20").  And if I look at the
C code it generates using CC -F -.i <name> then I can see that
bar::foo compiles to the following:

#line 204 "test.c"
char _bar_foo (_au0_this , _au0_joe , _au0_bill )
#line 202 "test.c"
struct bar *_au0_this ;

#line 204 "test.c"
int _au0_joe ;

#line 204 "test.c"
int _au0_bill ;
{
#line 206 "test.c"
printf ( (char *)"bill == -1\n") ;
}
;
  

I guess I need a later copy.  If only I had a spare $20000...

-steve