http://llvm.org/bugs/show_bug.cgi?id=19344
Bug ID: 19344
Summary: constexpr constructor incorrectly rejected due to base
class of non-literal type
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
struct base
{
constexpr base() { }
~base() { }
};
struct derived : base {
constexpr derived() { }
};
a.cc:8:13: error: constexpr constructor never produces a constant expression
[-Winvalid-constexpr]
constexpr derived() { }
^
a.cc:8:13: note: non-literal type 'base' cannot be used in a constant
expression
1 error generated.
I think clang is too strict here, I don't see where the standard requires all
base classes to have literal type for a constexpr constructor.
If derived::derived() is defined as defaulted the code is accepted, which is
inconsistent with the diagnostic because the base class is still non-literal.
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