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From: Robert Dewar <robert_dewar@my-deja.com>
Subject: Re: Ada Core Technologies announces GNATCOM
Date: 2000/04/15
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In article <wcchfd57nbn.fsf@world.std.com>,
  Robert A Duff <bobduff@world.std.com> wrote:
> So remind me: what is "unsupportable" about the design of
C_Pass_By_Copy
> (other than the fact that we wish it didn't have to exist at
all)?


The form with a pragma that says small structures should be
passed by copy, and large ones by reference. This is inspired
by the standard C convention at the implementation level of
passing small records in registers, and large registers by
address of a copy. But the pragma is about semantics not
about implementation, so it is very confused


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