Hi John ! On Monday 31 March 2008, John Maddock wrote:

Ralf W. Grosse-Kunstleve wrote:

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svn revision 43952 broke my VC8 build:

My experimental builds of our own program, too.

...

C:\AUTOBU~1\sources\boost\boost/python/converter/as_to_python_funct ion.hpp(21)

: error C2719: 'unnamed-parameter': formal parameter with

__declspec(align('8') ) won't be aligned

The compilation command is attached.

Grrr, do you have a test case?

I've managed to strip our code down to the attached example. I hope this is small enough and helps...

This is certainly deeply annoying: in order to fix one bug it appears I've introduced another - but without seeing the instantiation context and working out what Boost.Python is doing it's hard to say whether this should be fixed in type_traits or Boost.Python.

My testcase does not use Boost.Python, so I think the problem should be in type_traits. Please note: this only affects 32-bit builds, 64-bit builds using Visual Studio or address-model=64 when using bjam work. Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! Ingenieurgesellschaft für * voice: ++49 511 262926 57 ! Verkehrs- und Eisenbahnwesen mbH * fax : ++49 511 262926 99 ! Lister Straße 15 * juergen.hunold@ivembh.de ! www.ivembh.de * * Geschäftsführer: ! Sitz des Unternehmens: Hannover * Prof. Dr.-Ing. Thomas Siefer ! Amtsgericht Hannover, HRB 56965 * PD Dr.-Ing. Alfons Radtke !

Hi John ! An'n Dienstag 01 April 2008 hett John Maddock schreven:

Juergen Hunold wrote:

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My testcase does not use Boost.Python, so I think the problem should be in type_traits. Please note: this only affects 32-bit builds, 64-bit builds using Visual Studio or address-model=64 when using bjam work.

Confirmed: that looks like a valid use case to me! ;-)

*sigh* This is good to hear.

I hope this is now fixed in Trunk:

Confirmed, my build against TRUNK is up and running again. Thanks for the quick fix !

note however, you can still generate types with type_with_alignment<> which can't be passed through a function by value - but only if no other "ordinary" type is available - previously type_with_alignment<> wouldn't have compiled in these cases anyway.

Well, we're just reusing existing Boost components here :-)) Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! Ingenieurgesellschaft für * voice: ++49 511 262926 57 ! Verkehrs- und Eisenbahnwesen mbH * fax : ++49 511 262926 99 ! Lister Straße 15 * juergen.hunold@ivembh.de ! www.ivembh.de * * Geschäftsführer: ! Sitz des Unternehmens: Hannover * Prof. Dr.-Ing. Thomas Siefer ! Amtsgericht Hannover, HRB 56965 * PD Dr.-Ing. Alfons Radtke !