Re: Conversion error in template specialization
"Matthias Hofmann" <hofmann@anvil-soft.com> schrieb im Newsbeitrag
news:5aapfeF2nr1rjU1@mid.individual.net...
template <std::size_t N>
struct minimum_impl<const char[N]>
{
typedef const char( &TYPE )[N];
static TYPE impl( TYPE a, TYPE b )
{
// Error here: Cannot convert from
// const 'char*' to 'const char (&) [2]'.
return std::strcmp( a, b ) < 0 ? a : b;
}
};
Meanwhile I found out that the problem seems to be a bug in VC++ 2005
Express Edition. It is ignoring 5.16/4 (concerning the conditional
operator):
"If the second and third operands are lvalues and have the same type, the
result is of that type and is an lvalue."
Instead, it is applying the lvalue-to-rvalue conversion (e.g. the
array-to-pointer conversion) to the operands of the conditional operator,
and thus trying to return a pointer where an array is expected.
--
Matthias Hofmann
Anvil-Soft, CEO
http://www.anvil-soft.com - The Creators of Toilet Tycoon
http://www.anvil-soft.de - Die Macher des Klomanagers
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