[cfe-dev] libc++, std::bind, and <random>

[Seth Cantrell]

Should the following work with clang and libc++?

> #include <functional>
> #include <random>
> 
> int main(int argc,char const *argv[]) {
>     std::mt19937 re;
>     std::normal_distribution<> di(30,8);
>     auto rand = std::bind(di,re);
> }

Clang outputs the following error for this program:

> In file included from test.c++:2:
> /usr/include/c++/v1/random:2234:9: error: no member named 'generate' in 'std::__1::mersenne_twister_engine<unsigned int, 32, 624, 397, 31, 2567483615, 11,
>       4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>'
>     __q.generate(__ar, __ar + __n * __k);
>     ~~~ ^

It looks to me like clang supports all the features necessary, and the code runs as expected in VS2010. Here's the command line I used:

> clang++ -stdlib=libc++ -std=c++0x -U__STRICT_ANSI__ -pedantic -fno-blocks -frtti -g test.c++

I'm using revision 129268 of libc++ and clang -v outputs:

> clang version 3.0 (http://llvm.org/git/clang.git 067bbd0e11c71a33b51832532e836971be697699)
> Target: x86_64-apple-darwin10
> Thread model: posix