https://bugs.llvm.org/show_bug.cgi?id=41561
Bug ID: 41561
Summary: decltype(&(C::member)) yields pointer-to-member type
Product: clang
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: csm...@gmail.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
In some contexts, decltype(&(C::member)) yields a pointer to member type, but
according to [expr.unary.op]/4, no pointer to member should be formed when the
operand of the & operator is enclosed in parentheses.
http://eel.is/c++draft/expr.unary.op#4
The code below demonstrates this behavior. It compiles on all Clang versions I
have tried between 3.2 and HEAD, even though I don't think it should.
```
#include <type_traits>
struct S {
int x;
static_assert(std::is_same<decltype(&(S::x)), int S::*>::value, ""); // !
void foo() {
static_assert(std::is_same<decltype(&(S::x)), int*>::value, ""); // OK
}
};
static_assert(std::is_same<decltype(&(S::x)), int S::*>::value, ""); // !
int main() {
}
```
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