[PATCH] Fix PR libstdc++/19510: Uninitialized variable in some iterators

[Gabriel Dos Reis]

Volker Reichelt <reichelt@igpm.rwth-aachen.de> writes:

[...]

| Btw, the initialization is missing in 3.4, too. But the warning is not
| triggered. Should the patch be applied there, too?

Yes.  The lack of warning is no indication that things are OK.
The current code is really buggy in that respect.

-- Gaby