[Rcpp-devel] Formatting Fixed - Clang 3.0 and 3.3 errors on sugar/set.h

[Romain Francois]

Yes. That´s it, and this is fixed in the current devel version of Rcpp. 

Romain

Envoyé de mon iPhone

Le 19 nov. 2012 à 19:40, Chris Jefferson <chris at bubblescope.net> a écrit :

> On 19/11/12 17:33, Thell Fowler wrote:
>> 
>> /home/thell/R/library/Rcpp/include/Rcpp/sugar/sets.h:28:2: error:
>> invalid preprocessing directive
>> #elseif defined(HAS_TR1_UNORDERED_SET)
> 
> Without looking any deeper at this (sorry), clang doesn't not accept elseif, it requires elif.
> 
> gcc actually doesn't do what you expect with elseif. It just ignores it if the #if isn't added, and causes a compile-time error if you end up actually reaching that line. So in:
> 
> #if defined(X)
> 
> #elseif defined(Y)
> 
> #endif
> 
> If X is not defined, nothing is included even if Y is defined. If X is defined, a compile-time error always occurs.
> 
> in you want someone with gcc, clang and c++0x experience have a dig through these headers, I am happy to download them and have a look.
> 
> Chris
> 
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