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Re: Does a zero-sized object in BSS go away?

• From: Kazu Hirata <kazu at cs dot umass dot edu>
• To: ica2_ts at csv dot ica dot uni-stuttgart dot de
• Cc: binutils at sources dot redhat dot com
• Date: Thu, 19 Jun 2003 14:36:28 -0400 (EDT)
• Subject: Re: Does a zero-sized object in BSS go away?
• References: <jmisr2rlex.fsf@desire.geoffk.org><20030619.141939.27391978.kazu@cs.umass.edu><20030619182910.GD25132@rembrandt.csv.ica.uni-stuttgart.de>

Hi Thiemo,> > > The linker should assign an address to it.  However, some object file> > > formats can't represent zero-sized common objects, in which case the> > > assembler should probably report an error if someone tries to create one.> > > > Thanks.  That means some valid C using a zerosized object program> > may not be represented in those formats.  Sigh...> > How do you construct a zero sized object in valid C?Oops, I just realized "struct s { char a[0] } s0;" is a GCC extension.Kazu Hirata

• References:
  • Re: Does a zero-sized object in BSS go away?
    • From: Geoff Keating
  • Re: Does a zero-sized object in BSS go away?
    • From: Kazu Hirata
  • Re: Does a zero-sized object in BSS go away?
    • From: Thiemo Seufer