Re: [boost] bug in type_traits/is_virtual_base_of ??

Subject: Re: [boost] bug in type_traits/is_virtual_base_of ??
From: Daniel Larimer (dlarimer_at_[hidden])
Date: 2010-02-11 13:40:25

Here is the correct output running on Linux with gcc 4.3.2 

A,C          0
B,C          0
A,D          0
virtual B,D  1
A,E          0
B,E          0
sizeof(A) 4
sizeof(B) 4
sizeof(C) 12
sizeof(D) 16
sizeof(E) 16

Perhaps some quirky difference between 32/64 bit?  Or did I just find a bug in Apple's version of gcc?

Dan

On Feb 11, 2010, at 12:59 PM, John Maddock wrote:

>> cast the bool to an int, still does not work.    It works for most cases, for example this works:
>> 
>> struct C : public A, public B
>> {
>> virtual test(); //
>> }
>> 
>> struct C : public A, public B
>> {
>> virtual test();
>> float    parameter; // DOESN"T WORK ANY MORE
>> };
>> 
> 
> Which specific compiler version?  I need something that I can reproduce here... John.
> 
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