why the candidate is non-viable. There's a lot we can do to improve this, but
it's a good start. Further improvements should probably be integrated with the
bad-initialization reporting routines.
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as parts of overload sets. Also, refer to constructors as 'constructors'
rather than functions.
Adjust a lot of tests.
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InitializationSequence. Specially, switch initialization of a C++
class type (either copy- or direct-initialization).
Also, make sure that we create an elidable copy-construction when
performing copy initialization of a C++ class variable. Fixes PR5826.
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- This is designed to make it obvious that %clang_cc1 is a "test variable"
which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
can be useful to redefine what gets run as 'clang -cc1' (for example, to set
a default target).
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a.k.a. Koenig lookup) in C++. Most of the pieces are in place, but for
two:
- In an unqualified call g(x), even if the name does not refer to
anything in the current scope, we can still find functions named
"g" based on ADL. We don't yet have this ability.
- ADL will need updating for friend functions and templates.
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cope with the case where a user-defined conversion is actually a copy
construction, and therefore can be compared against other standard
conversion sequences. While I called this a hack before, now I'm
convinced that it's the right way to go.
Compare overloads based on derived-to-base conversions that invoke
copy constructors.
Suppress user-defined conversions when attempting to call a
user-defined conversion.
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conversions.
Notes:
- Overload resolution for converting constructors need to prohibit
user-defined conversions (hence, the test isn't -verify safe yet).
- We still use hacks for conversions from a class type to itself.
This will be the case until we start implicitly declaring the appropriate
special member functions. (That's next on my list)
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Charles Li