Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!ucsd!ames!sgi!shinobu!odin!delrey!shap
From: shap@delrey.sgi.com (Jonathan Shapiro)
Newsgroups: comp.lang.c++
Subject: Re: Why doesn't inline always work?
Keywords: inline fails
Message-ID: <5041@odin.SGI.COM>
Date: 8 Mar 90 21:20:35 GMT
References: <540@janus.Quotron.com>
Sender: news@odin.SGI.COM
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 23

In article <540@janus.Quotron.com> todd@janus.Quotron.com (Todd Booth) writes:
>I know of a 2.0 C++ beta product that does not expand inline
>functions that contain a goto, for, do, or while, as inline.  
>
>Do any other C++ products?  
>
>--todd booth / Quotron

All cfront-based C++ systems have this limitation.

The problem is that in order to perform inlining, cfront turns the
function into a single expression (remember that the function needs to
return a result, so it needs to be an expression).

Since C has no notion of returning a value from a block, and goto is
not legal within an expression, cfront has no way to generate inline
loops.

This is one of the areas in which generating object code would be a
big win.

Jonathan Shapiro
Silicon Graphics, Inc.