Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!columbia!read.columbia.edu!kearns2
From: kearns2@read.columbia.edu (Steve Kearns)
Newsgroups: comp.lang.c++
Subject: default argument bug in 1.2!
Message-ID: <6409@columbia.edu>
Date: 23 Jul 89 18:02:58 GMT
References: <503@gill.UUCP>
Sender: news@columbia.edu
Reply-To: kearns@read.UUCP (Steve Kearns)
Organization: Columbia University Department of Computer Science
Lines: 25


Is there a workaround for the following bug?

When I declare a member function to have a default constant argument,
such as :

class bar {
		foo(int joe, int bill = -1);
};


Then the definition of foo usually contains a test like the following:

   if (bill == -1) 
		{ ...do this...}
   else 
        { ...do that...}

The bug is that 1.2 seems to optimize out the if (bill == ..) test
and include, in this case, only the first branch of the "if".  
It seems to treat the "int bill = -1" declaration as if I was initializing
a local variable.  

Does anyone know any workarounds?
-steve