This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]

Re: Test for invalid optimization of ?: lvalue expression

To: Jason Merrill <jason at cygnus dot com>
Subject: Re: Test for invalid optimization of ?: lvalue expression
From: Alexandre Oliva <aoliva at cygnus dot com>
Date: 30 May 2000 10:06:15 -0300
Cc: gcc-patches at gcc dot gnu dot org
Organization: Cygnus Solutions, a Red Hat Company
References: <orog5q7o6w.fsf@saci.lsd.ic.unicamp.br><orog5q62il.fsf@saci.lsd.ic.unicamp.br><u98zwscw2j.fsf@decepticon.cygnus.com>

On May 30, 2000, Jason Merrill <jason@cygnus.com> wrote:

> A better solution might be to turn the expression in question into

>   *((I != J) ? &I : &J)

Good idea.  I'll give it a try.

> How does the C frontend deal with using a cond_expr as an lvalue?

Unfortunately, I won't have time to investigate it today, because I'm
leaving for a 10 days trip this afternoon, but I'll investigate it
when I return.

-- 
Alexandre Oliva    Enjoy Guaraná, see http://www.ic.unicamp.br/~oliva/
Cygnus Solutions, a Red Hat company        aoliva@{redhat, cygnus}.com
Free Software Developer and Evangelist    CS PhD student at IC-Unicamp
oliva@{lsd.ic.unicamp.br, gnu.org}   Write to mailing lists, not to me

References:
- Test for invalid optimization of ?: lvalue expression
  - From: Alexandre Oliva
- Re: Test for invalid optimization of ?: lvalue expression
  - From: Alexandre Oliva
- Re: Test for invalid optimization of ?: lvalue expression
  - From: Jason Merrill

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]