http://llvm.org/bugs/show_bug.cgi?id=13311
Bug #: 13311
Summary: [C++11] cannot return rvalue reference to function
type
Product: clang
Version: trunk
Platform: PC
OS/Version: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++11
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
The following code fails to compile:
#include <type_traits>
void bar() {}
void (&&foo())() { return static_cast<void (&&)()>(bar); }
static_assert(std::is_same<decltype(foo()), void (&&)()>::value, "");
In my understanding, rvalue references to function types are allowed, and clang
seems to agree. However, clang refuses to return one. Instead, it gets turned
into an lvalue reference to function type. The following succeeds:
// Shouldn't compile but does, IIUC
static_assert(std::is_same<decltype(foo()), void (&)()>::value, "");
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