[Bug c++/51379] reinterpret_cast is not particularly useful

["jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51379

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-01 13:58:29 UTC ---
I wonder about the C++11 wording though, in C++03 it said:
"The reinterpret_cast operator shall not cast away constness. [Note: see 5.2.11
for the definition of ‘‘casting away constness’’. Subject to the restrictions
in this section, an expression may be cast to its own type using a
reinterpret_cast operator. ]"
but in C++11:
"The reinterpret_cast operator shall not cast away constness (5.2.11). An
expression of integral, enumeration, pointer, or pointer-to-member type can be
explicitly converted to its own type; such a cast yields the
value of its operand."
For the latter wording it isn't obvious if the second sentence is subject to
the other restrictions or not.