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Fix Ticket 12140; mark only single-arg ctor as explicit. Thanks to Thimo for the patch.

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This commit is contained in:
Marshall Clow 2016-06-15 15:50:21 -07:00
parent 287844fe76
commit 181f302ee4
1 changed files with 7 additions and 6 deletions
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13
include/boost/utility/base_from_member.hpp
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@ -47,11 +47,11 @@
// {}
// This macro should only persist within this file.
#define BOOST_PRIVATE_CTR_DEF( z, n, data ) \
template < BOOST_PP_ENUM_PARAMS(n, typename T) > \
explicit base_from_member( BOOST_PP_ENUM_BINARY_PARAMS(n, T, x) ) \
: member( BOOST_PP_ENUM_PARAMS(n, x) ) \
{} \
#define BOOST_PRIVATE_CTR_DEF( z, n, data ) \
template < BOOST_PP_ENUM_PARAMS(n, typename T) > \
base_from_member( BOOST_PP_ENUM_BINARY_PARAMS(n, T, x) ) \
: member( BOOST_PP_ENUM_PARAMS(n, x) ) \
{} \
/**/
@ -142,7 +142,8 @@ protected:
: member()
{}
BOOST_PP_REPEAT_FROM_TO( 1, BOOST_PP_INC(BOOST_BASE_FROM_MEMBER_MAX_ARITY),
template < typename T0 > explicit base_from_member( T0 x0 ) : member( x0 ) {}
BOOST_PP_REPEAT_FROM_TO( 2, BOOST_PP_INC(BOOST_BASE_FROM_MEMBER_MAX_ARITY),
BOOST_PRIVATE_CTR_DEF, _ )
#endif