Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!att!cbnewsc!crocker
From: crocker@cbnewsc.ATT.COM (ronald.t.crocker)
Newsgroups: comp.lang.c++
Subject: Re: inlines and __LINE__
Message-ID: <12750@cbnewsc.ATT.COM>
Date: 11 Jan 90 17:05:49 GMT
References: <2381@ektools.UUCP>
Reply-To: crocker@cbnewsc.ATT.COM (ronald.t.crocker,ihp,)
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 41

In article <2381@ektools.UUCP> randolph@ektools.UUCP (Gary L. Randolph) writes:
>I want to use __LINE__ in an inline function as follows:
... code deleted
>
>Must I use a macro?

That's one solution.  __LINE__ is a cpp built-in.  The way AT&T C++ (i.e. cfront
and friends) work, cpp is run before cfront.  Hence, after running cpp your
program looks like

class Trace
{
private:
	int state;
public:
	Trace() { state = 1; }
	int assert() { return 9;}
};

main()
{
Trace a;
cout<<a.assert();
}

Cpp, being your friend, replaced __LINE__ by the line number.  I would just
use __LINE__ as an argument to Trace::assert, or make a macro that uses
__LINE__ as the argument to Trace::assert.

>
>Gary

Ron Crocker
AT&T Bell Laboratories, IHP 1A-213
(312) 713-5262
...!att!iexist!crocker
-- 
Ron Crocker
AT&T Bell Laboratories, IHP 1A-213
(312) 713-5262
...!att!iexist!crocker