From mboxrd@z Thu Jan  1 00:00:00 1970
From: Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org
Subject: Re: c++/2817
Date: Sat, 19 May 2001 10:06:00 -0000
Message-id: <20010519170600.6518.qmail@sourceware.cygnus.com>
X-SW-Source: 2001-05/msg00466.html
List-Id: <gcc-prs.sourceware.org>

The following reply was made to PR c++/2817; it has been noted by GNATS.

From: Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
To: Mark Mitchell <mark@codesourcery.com>,
 Franz.Sirl-kernel@lauterbach.com
Cc: mmitchel@gcc.gnu.org,
 gcc-gnats@gcc.gnu.org,
 nobody@gcc.gnu.org
Subject: Re: c++/2817
Date: Sat, 19 May 2001 19:07:45 +0200

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 On Saturday 19 May 2001 18:48, Mark Mitchell wrote:
 > >>>>> "Franz" == Franz Sirl <Franz.Sirl-kernel@lauterbach.com> writes:
 >
 >     Franz> Well, I think it's a bit pointless to attach sourcecode
 >     Franz> already in the testsuite, but here it is.
 >
 > The reason is that I don't have the PowerPC headers, which is where
 > ptrdiff_t will come from, which is one of the critical things for me
 > to look at the aliasing stuff.
 
 I clicked on the wrong file anyway, heres the .ii. 
 
 BTW, if you want access to the PPC developer machine, that's no problem.
 
 Franz.
 
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 # 5 "vtable2.C"
 # 1 "/usr/lib/gcc-lib/ppc-linux/3.0/include/stddef.h" 1 3
 # 147 "/usr/lib/gcc-lib/ppc-linux/3.0/include/stddef.h" 3
 typedef int ptrdiff_t;
 # 199 "/usr/lib/gcc-lib/ppc-linux/3.0/include/stddef.h" 3
 typedef unsigned int size_t;
 # 6 "vtable2.C" 2
 
 struct S0
 {
   virtual void s0 ();
 };
 
 struct S1 : virtual public S0
 {
   virtual void s1 ();
 };
 
 struct S2 : virtual public S1
 {
   virtual void s1 ();
   virtual void s0 ();
 };
 
 struct S3
 {
   virtual void s3 ();
 };
 
 struct S4 : public S3, virtual public S2
 {
   virtual void s1 ();
 };
 
 void S0::s0 ()
 {
 }
 
 void S1::s1 ()
 {
 }
 
 void S2::s1 ()
 {
 }
 
 void S2::s0 ()
 {
 }
 
 void S3::s3 ()
 {
 }
 
 void S4::s1 ()
 {
 }
 # 124 "vtable2.C"
 extern "C" {
 void _ZN2S32s3Ev ();
 void _ZN2S42s1Ev ();
 }
 
 int main ()
 {
   S4 s4;
   volatile ptrdiff_t **vptr;
   volatile ptrdiff_t *vtbl;
 
 
   vptr = (volatile ptrdiff_t **) (char*) &s4;
   vtbl = *vptr;
   vtbl -= 5;
 
   if (*vtbl++ != ((char*) (S0*) &s4) - (char*) &s4)
     return 1;
 # 175 "vtable2.C"
 }
 
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