[Bug libstdc++/42925] Not possible to compare unique_ptr with 0

[gcc at magfr dot user dot lysator dot liu dot se]

------- Comment #3 from gcc at magfr dot user dot lysator dot liu dot se  2010-02-01 17:19 -------
I think the code is valid.
The unique_ptr(nullptr_t) constructor should take the 0 and build an empty
unique_ptr object that is compared with ptr.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42925