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This patch also fixes PR22135. (https://llvm.org/bugs/show_bug.cgi?id=22135)
See the review for more information: http://reviews.llvm.org/D6964
llvm-svn: 246977
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llvm-svn: 246399
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Summary: This patch adds proper guards to the is_destructible tests depending on the standard version so that they pass in c++03.
Reviewers: mclow.lists, EricWF
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D10047
llvm-svn: 242612
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The two main fixes this patch contains are:
- use __identity_t instead of common_type. common_type was used as an
identity metafunction but the decay resulted in incorrect results.
- Pointers to free functions were not counted as functions. Remove the pointer
before checking if a type is a function.
llvm-svn: 239668
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__member_function_traits.
Replacing the dependancy on __member_function_traits with is_function allows
is_member_function_pointer to work more often. In particular it allows it to
work when we don't have variadic templates but the function has an arity > 3.
llvm-svn: 239649
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llvm-svn: 237636
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'complete' an type definition unnecessarily. Thanks to Richard Smith for the report.
llvm-svn: 234886
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of is_convertible.
Summary:
Currently the conversion check does not take place in a context where access control SFINAE is applied. This patch changes the context of the test expression so that SFINAE occurs if access control does not permit the conversion.
Related bug: https://llvm.org/bugs/show_bug.cgi?id=22771
Reviewers: mclow.lists, rsmith, dim
Reviewed By: dim
Subscribers: dim, rodrigc, emaste, cfe-commits
Differential Revision: http://reviews.llvm.org/D8461
llvm-svn: 233552
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llvm-svn: 233285
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Summary:
This patch introduces some black magic to detect const and volatile qualified function types such as `void () const`.
The patch works in the following way:
We first rule out any type that satisfies on of the following. These restrictions are important so that the test below works properly.
* `is_class<_Tp>::value`
* `is_union<_Tp>::value`
* `is_void<_Tp>::value`
* `is_reference<_Tp>::value`
* `__is_nullptr_t<_Tp>::value`
If none of the above is true we perform overload resolution on `__source<_Tp>(0)` to determine the return type.
* If `_Tp&` is well-formed we select `_Tp& __source(int)`. `_Tp&` is only ill formed for cv void types and cv/ref qualified function types.
* Otherwise we select `__dummy_type __source(...)`. Since we know `_Tp` cannot be void then it must be a function type.
let `R` be the returned from `__source<_Tp>(0)`.
We perform overload resolution on `__test<_Tp>(R)`.
* If `R` is `__dummy_type` we call `true_type __test(__dummy_type)`.
* if `R` is `_Tp&` and `_Tp&` decays to `_Tp*` we call `true_type __test(_Tp*)`. Only references to function types decay to a pointer of the same type.
* In all other cases we call `false_type __test(...)`.
`__source<_Tp>(0)` will try and form `_Tp&` in the return type. if `_Tp&` is not well formed the return type of `__source<_Tp>(0)` will be dummy type. `_Tp&` is only ill-formed for cv/ref qualified function types (and void which is dealt with elsewhere).
This fixes PR20084 - http://llvm.org/bugs/show_bug.cgi?id=20084
Reviewers: rsmith, K-ballo, mclow.lists
Reviewed By: mclow.lists
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D7573
llvm-svn: 229696
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llvm-svn: 228344
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llvm-svn: 227363
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llvm-svn: 224658
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