Re: [boost] [1.34.0] optional failures

From: Fernando Cacciola (fernando_cacciola_at_[hidden])
Date: 2007-03-07 11:39:55

Thomas Witt wrote:
> Fernando,
>
> Fernando Cacciola wrote:
>>
>> How about I report on the status tomorrow noon? (my time, UTC-3)
>
OK.
Comming up with a fix was quite easy, specially given that, a I said, this 
was a known problem and I had the fix waiting to be applied (but needed a 
linux box to test it). I still don't understand why it showed up after my 
lastest changes

Anyway, here's the diff:

79,91d78
< // Daniel Wallin discovered that bind/apply.hpp badly interacts with the 
apply<>
< // member template of a factory as used in the optional<> implementation.
< // He proposed this simple fix which is to move the call to apply<> 
outside
< // namespace boost.
< namespace boost_optional_detail
< {
<   template <class T, class Factory>
<   void construct(Factory const& factory, void* address)
<   {
<     factory.BOOST_NESTED_TEMPLATE apply<T>(address);
<   }
< }
<
325c312
<        boost_optional_detail::construct<value_type>(factory, 
m_storage.address());
---
>        factory.BOOST_NESTED_TEMPLATE 
> apply<value_type>(m_storage.address()) ;
Unfortunately, I couldn't test it on gcc.
I got stuck pretty much all morning on this error:
gcc.link ../../../bin.v2/libs/optional/test/optional_test.test/gcc-4.0.2
Copyright/debug/optional_test
/usr/lib/libc_nonshared.a(elf-init.oS)(.text.__i686.get_pc_thunk.bx+0x0): In 
function `__i686.get_pc_thunk.bx':
: multiple definition of `__i686.get_pc_thunk.bx'
../../../bin.v2/libs/optional/test/optional_test.test/gcc-4.0.2
Copyright/debug/optional_test.o(.gnu.linkonce.t.__i686.get_pc_thunk.bx+0x0):/usr/include/c++/3.3/new:94: 
first defined here
collect2: ld returned 1 exit status
    "g++"    -o 
"../../../bin.v2/libs/optional/test/optional_test.test/gcc-4.0.2
Copyright/debug/optional_test" -Wl,--start-group 
"../../../bin.v2/libs/optional/test/optional_test.test/gcc-4.0.2
Copyright/debug/optional_test.o"    -Wl,--end-group -g
...failed gcc.link 
../../../bin.v2/libs/optional/test/optional_test.test/gcc-4.0.2
Googling indicates that I have my gcc installation messed up, but couldn't 
fix it yet.
So, can anyone tried the patch on gcc? It works here on VC80 and VC7.1.
Best
Fernando Cacciola