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Subject: [Bug c++/47453] Various non-conforming behaviors with braced-init-list initialization
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47453

--- Comment #5 from Johannes Schaub <schaub.johannes at googlemail dot com> 2011-07-29 12:23:35 UTC ---
(In reply to comment #4)
> struct A { int a[2]; A():a({1, 2}) { } };
> 
> Should be valid. Example:
> 
> class cond_variable
> {
>     ::pthread_cond_t cond;
> public:
>     constexpr cond_variable() : cond(PTHREAD_COND_INITIALIZER) {}
> };
> 
> What is pthread_cond_t? Struct? Array? Scalar? How I can be sure this code is
> accepted in any case? Uniform initialization initially address this issue.
> 

Why not say

    constexpr cond_variable() : cond PTHREAD_COND_INITIALIZER { }


> Out of constructor one can use "=":
> 
> ::pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
> 

You can define it as follows to make it work in both cases

    #define PTHREAD_COND_INITIALIZER {}