Bug 724818

Summary: FTBFS due to boost rebase
Product: [Fedora] Fedora Reporter: Petr Machata <pmachata>
Component: wesnothAssignee: Gwyn Ciesla <limburgher>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: bruno, laurent.rineau__fedora, limburgher, mnewsome
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Last Closed: 2011-07-22 11:30:26 EDT Type: ---
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Bug Blocks: 711845    
Description Flags
Work around BOOST_FOREACH regression none

Description Petr Machata 2011-07-21 17:45:46 EDT
Created attachment 514578 [details]
Work around BOOST_FOREACH regression

Wesnoth fails to build as a result of boost rebase.  The root of the problem is described here: https://svn.boost.org/trac/boost/ticket/5279 .  In essence, GCC changed behavior and BOOST_FOREACH had to change the rvalue detection strategy to BOOST_FOREACH_RUN_TIME_CONST_RVALUE_DETECTION.  But this is written in sources for that detection strategy:

// Detect at run-time whether an expression yields an rvalue
// or an lvalue. This is 100% standard C++, but not all compilers
// accept it. Also, it causes FOREACH to break when used with non-
// copyable collection types.

Unfortunately, wesnoth indeed iterates over noncopyable collection objects, so we have to fall back to hand-rolled iteration.  The attached patch implements exactly this workaround.

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Comment 1 Gwyn Ciesla 2011-07-22 09:39:31 EDT
Sent upstream:

Comment 2 Gwyn Ciesla 2011-07-22 11:30:26 EDT
Built in rawhide.  Thanks!