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Re: Results from Intel4s C++ ABI Testsuite
- From: Mark Mitchell <mark at codesourcery dot com>
- To: Joe Buck <Joe dot Buck at synopsys dot com>, Richard Henderson <rth at redhat dot com>
- Cc: Nathan Sidwell <nathan at codesourcery dot com>, Andreas Jaeger <aj at suse dot de>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>, Goodman Joe <joe dot goodman at intel dot com>
- Date: Wed, 10 Jul 2002 14:50:26 -0700
- Subject: Re: Results from Intel4s C++ ABI Testsuite
It seems that for true C++ binary compatibility all implementers must
agree on the type of size_t. Was this overlooked?
Sort of.
As Richard says, this is pretty much a property of the OS. If "int" and
"long" are the same, you can interchange the two for binary compatibility
purposes, but you'll never make your header files work right.
And, of course, since "size_t" is just a typedef we can't mangle it
specially, even if we wanted to.
It is true that if my OS uses "long" and yours uses "int" -- but they
are the same in all other ways -- then I can't mix and match C++ shared
objects from our two systems. I can still mix and match C++ shared
objects from any one of those systems, even if I used different
compilers to build them.
--
Mark Mitchell mark@codesourcery.com
CodeSourcery, LLC http://www.codesourcery.com