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Release notes for hash.

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[SVN r63810]
This commit is contained in:
Daniel James
2010-07-10 13:47:47 +00:00
parent 38d131c158
commit bbfb6fd32c
2 changed files with 12 additions and 0 deletions
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8
doc/changes.qbk
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@@ -106,4 +106,12 @@
Avoid hashing 0.5 and 0 to the same number. Avoid hashing 0.5 and 0 to the same number.
* Stop using deprecated `BOOST_HAS_*` macros. * Stop using deprecated `BOOST_HAS_*` macros.
[h2 Boost 1.44.0]
* Prevent implicit conversions when calling `hash_value`. If you find
that the new version breaks your code, you can enable the old
behaviour by defining `BOOST_HASH_ALLOW_IMPLICIT_CASTS` - although
I would recommend that you update your code to work with the new
version.
[endsect] [endsect]

4
include/boost/functional/hash/hash.hpp
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@@ -30,6 +30,8 @@
namespace boost namespace boost
{ {
#if !defined(BOOST_HASH_ALLOW_IMPLICIT_CASTS)
// If you get a static assertion here, it's because hash_value // If you get a static assertion here, it's because hash_value
// isn't declared for your type. // isn't declared for your type.
template <typename T> template <typename T>
@@ -38,6 +40,8 @@ namespace boost
return 0; return 0;
} }
#endif
std::size_t hash_value(bool); std::size_t hash_value(bool);
std::size_t hash_value(char); std::size_t hash_value(char);
std::size_t hash_value(unsigned char); std::size_t hash_value(unsigned char);