Re: [boost] [RC_1_34_0] failures + analysis

From: David Abrahams (dave_at_[hidden])
Date: 2007-02-26 02:18:42

"Peter Dimov" <pdimov_at_[hidden]> writes:

> David Abrahams wrote:
>
>> testing.capture-output bind/mem_fn_eq_test.run
>>
>>  looks like a Boost bug.
>>
>>  ..\libs\bind\test\mem_fn_eq_test.cpp(175): test
>>  'boost::mem_fn(&X::mf0_1) != boost::mem_fn(&X::mf0_2)' failed in
>>  function 'int __cdecl main(void)'
>>
>>  ..\libs\bind\test\mem_fn_eq_test.cpp(178): test
>> 'boost::mem_fn(&X::cmf0_1) != boost::mem_fn(&X::cmf0_2)' failed in
>> function 'int __cdecl main(void)'
>> ...
>> 36 errors detected.
>
> This is caused by the linker folding X::mf0_1 and X::mf0_2 into the same 
> function. It is neither a Boost bug nor a compiler bug, just not 
> particularly standard behavior. 

Oh, well, it's a bug of the C++ implementation - we might as well say
it's a bug in the compiler even though it technically happens at link
time.  Pointers to distinct functions are not allowed to compare
equal, even if most of their code gets folded.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com