slice valarrays with std::string -> segfault

[Gabriel Dos Reis]

Paolo Carlini <pcarlini@suse.de> writes:

| Jhair Tocancipa Triana wrote:
| 
| >Please consider the program below (backtrace included (gcc 4.0.2
| >(Ubuntu))). The program crashes when doing a std::slice on a valarray
| >containing a structure with a string element in it.
| >  
| >
| Just wanted to say that this has nothing to do with string specifically,
| happens also together with a completely different implementation of
| string or, e.g., together with a deque data member.
| 
| I think something is going wrong with types characterized by
| ""non-trivial"" constructors, e.g., doing memory allocation from the heap.
| 
| Gaby can you look into this?

yes -- see my other message.  I could not read mails before now.
The main fault is my thoughtless use of _copy instead of _copy_construct.

-- Gaby