[Bug libstdc++/52681] [C++11] Using std::thread without -pthread crashes without warning

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52681

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-04-18
         AssignedTo|unassigned at gcc dot       |redi at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-04-18 
10:05:43 UTC ---
We could fix this just by overloading __throw_system_error to take a string:

 __throw_system_error(int(errc::operation_not_permitted),
                      "Enable multithreading support to use std::thread");

then passing that to the std::system_error constructor.

That would give something like:

terminate called after throwing an instance of 'std::system_error'
  what():  Enable multithreading support to use std::thread: Operation not
permitted
Aborted (core dumped)