[Bug c++/43947] [C++0x] constexpr should allow declaration without a definition

[redi at gcc dot gnu dot org]

------- Comment #1 from redi at gcc dot gnu dot org  2010-04-30 12:55 -------
I think "support" is putting it a bit strongly :)

There is some code in place to recognise the keyword, that's about it


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43947