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# beca4a33 08-Jun-2016 George Burgess IV <george.burgess.iv@gmail.com>

[Sema] Teach CheckPlaceholderExpr about unaddressable functions.

Given the following C++:

```
void foo();
void foo() __attribute__((enable_if(false, "")));

bool bar() {
auto P = foo;
return P

[Sema] Teach CheckPlaceholderExpr about unaddressable functions.

Given the following C++:

```
void foo();
void foo() __attribute__((enable_if(false, "")));

bool bar() {
auto P = foo;
return P == foo;
}
```

We'll currently happily (and correctly) resolve `foo` to the `foo`
overload without `enable_if` when assigning to `P`. However, we'll
complain about an ambiguous overload on the `P == foo` line, because
`Sema::CheckPlaceholderExpr` doesn't recognize that there's only one
`foo` that could possibly work here.

This patch teaches `Sema::CheckPlaceholderExpr` how to properly deal
with such cases.

Grepping for other callers of things like
`Sema::ResolveAndFixSingleFunctionTemplateSpecialization`, it *looks*
like this is the last place that needed to be fixed up. If I'm wrong,
I'll see if there's something we can do that beats what amounts to
whack-a-mole with bugs.

llvm-svn: 272080

show more ...


Revision tags: llvmorg-3.8.1, llvmorg-3.8.1-rc1
# cc2f355f 19-Mar-2016 George Burgess IV <george.burgess.iv@gmail.com>

[Sema] Make type deduction work with some overloadable functions

Some functions can't have their address taken. If we encounter an
overload set where only one of the candidates can have its address

[Sema] Make type deduction work with some overloadable functions

Some functions can't have their address taken. If we encounter an
overload set where only one of the candidates can have its address
taken, we should automatically select that candidate's type in type
deduction.

Differential Revision: http://reviews.llvm.org/D15591

llvm-svn: 263888

show more ...


# 3cde9bf9 19-Mar-2016 George Burgess IV <george.burgess.iv@gmail.com>

[Sema] Allow casting of some overloaded functions

Some functions can't have their address taken. If we encounter an
overload set where only one of the candidates can have its address
taken, we shoul

[Sema] Allow casting of some overloaded functions

Some functions can't have their address taken. If we encounter an
overload set where only one of the candidates can have its address
taken, we should automatically select that candidate in cast
expressions.

Differential Revision: http://reviews.llvm.org/D17701

llvm-svn: 263887

show more ...