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Re: Undefined ref to 'function<void ()()>::operator()() const' when called from free function defined in cc file.

From: Paolo Carlini <paolo dot carlini at oracle dot com>
To: Chris Fairles <chris dot fairles at gmail dot com>
Cc: Peter Dimov <pdimov at mmltd dot net>, libstdc++ <libstdc++ at gcc dot gnu dot org>
Date: Fri, 29 Aug 2008 15:38:24 +0200
Subject: Re: Undefined ref to 'function<void ()()>::operator()() const' when called from free function defined in cc file.
References: <fac6bb500808290541nf3184adr7bdc6b06a1673d7a@mail.gmail.com> <002201c909d9$f972bfd0$6901a8c0@pdimov> <fac6bb500808290632o26fe6dafv50707fbda4a12a3e@mail.gmail.com>

Chris Fairles wrote:

Yeah. I'm not a huge fan of this global function<> w/ mutex method (i could name a few deadlock cases off the top of my head, __f making a call_once with the same once_flag to name one). I'm not 100% familiar with GCC's TLS support (other than gthread's get/setspecific) but I'll definitely take a look.

... if I understand correctly, can be considered as an optimization, which, therefore, can be worked-out in the detail in a second moment. Anyway, up to you...

Thanks for the tip (and will make sure to use GLIBCXX_HAVE_TLS)

You are welcome. We have at least an existing use in libsupc++/eh_globals.cc...

Paolo.

References:
- Undefined ref to 'function<void ()()>::operator()() const' when called from free function defined in cc file.
  - From: Chris Fairles
- Re: Undefined ref to 'function<void ()()>::operator()() const' when called from free function defined in cc file.
  - From: Peter Dimov
- Re: Undefined ref to 'function<void ()()>::operator()() const' when called from free function defined in cc file.
  - From: Chris Fairles

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