Re: A specialization bug?

[Phil Edwards <pedwards at disaster dot jaj dot com>]

> Gcc 2.95.3 in default configuration compiles it well.

GCC 2.x did not fully support namespace std.  GCC 3 does.  Code which assumes
the existence or non-existence of std:: will often behave differently when
moving from 2.x to 3.x.

> I have to wrap the definition in namespace std to make it compile,
> which seems against the C++ standard.

It's required by the standard.  If you are going to specialize a template
declared in namespace std, then you must re-open namespace std to write
the specialization.  Writing std::hash isn't enough.

Note that hash_map and the hash template are /not/ part of the C++ standard.
They're sitting in namespace std in GCC 3.0 for hysterical raisins.
For a future GCC release they will be in a different namespace.


Phil

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