program_options boost::bad_any_cast: failed conversion using boost::any_cast
Hi, since a while I always get this any-cast error when using program_options with type "std::string". to check it out I'd modified the simple example from boost for program_options a little bit (checking if any_type as it works - does, inserted a string-parameter). Compiling, starting with "--log astring" -> crash. starting without works at expected. (See appended source file) System is Debian etch, X86_64, gcc 4.1.2 20061115 boost: tried with debian package and self build variant. question now is: why? what may I do? As far as I remember on a unstable 32bit with gcc 4.0 it did work, but not sure if I got it running on a 64 bit system later. Hope for help Rajko
Found the trick myself. The option "-fvisibility=hidden" made the problem. But: Why? All other stuff is working fine, only program_options doesn't work anymore with that compile-option. May this get fixed sometimes? Rajko
Hi Rajko ! On Tuesday 13 February 2007 11:50, Raiko Albrecht wrote:
Found the trick myself. The option "-fvisibility=hidden" made the problem.
But: Why?
Well, the Boost libraries simply don't offer visibility support on gcc.
All other stuff is working fine, only program_options doesn't work anymore with that compile-option. May this get fixed sometimes?
Well, I've patched my CVS Head to enable visibility support on gcc. But I'd rather like to a) get 1.34.0 out as fast as possible. b) get the switch to svn done c) get the new release procedure working d) get regression tests on Trunk and then start a discussion about this patch ... If you like, I see if I can extract the diff from my other changes. CVS really gets on my nerves... 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,
All other stuff is working fine, only program_options doesn't work anymore with that compile-option. May this get fixed sometimes?
Well, I've patched my CVS Head to enable visibility support on gcc. But I'd rather like to a) get 1.34.0 out as fast as possible. b) get the switch to svn done c) get the new release procedure working d) get regression tests on Trunk
Do that :) Well, I think this is enough to me know that it is possible to fix. And if read-only access to boost-cvs is possible I may extract that patch myself when I have time. This moment I can live without.
CVS really gets on my nerves...
;) Many tnx for your respond and for your check, I'll take a look on it next days Rajko
participants (2)
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Juergen Hunold -
Raiko Albrecht