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Re: Preprocess constants.

To: Paul Faure <paul at engsoc dot org>
Subject: Re: Preprocess constants.
From: Alexandre Oliva <aoliva at redhat dot com>
Date: 30 Jun 2001 01:33:27 -0300
Cc: <gcc-help at gcc dot gnu dot org>
Organization: GCC Team, Red Hat
References: <Pine.LNX.4.33.0106291458560.12310-100000@stout.engsoc.carleton.ca>

On Jun 29, 2001, Paul Faure <paul@engsoc.org> wrote:

> Why will this code not compile ? Can GCC not figure out the strlen() of a
> constant string at preprocess time ?

The result of a function call is never a compile-time constant, even
though you may know it is.  Consider applying the sizeof operator to
the string, so that you get a constant expression as per the Standard
definition.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

Follow-Ups:
- Is GCC v.3.0.x Objective C working properly on ARM Linux?
  - From: Robert E. Hartley
- Re: Preprocess constants.
  - From: Paul Faure

References:
- Preprocess constants.
  - From: Paul Faure

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