https://bugs.llvm.org/show_bug.cgi?id=49410
Bug ID: 49410
Summary: constexpr static data member template cause an error:
static data member 'v' already has an initializer
Product: clang
Version: 11.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++14
Assignee: unassignedclangb...@nondot.org
Reporter: danny321974...@gmail.com
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, richard-l...@metafoo.co.uk
When compile the constexpr variable template below with option -std=c++14
struct A {
template <typename T>
static constexpr T v{};
};
template <typename T>
constexpr T A::v;
int main()
{
auto ptr1 = &A::v<int>;
auto ptr2 = &A::v<int>; // no error if remove this line
}
generates the error below:
clang_cxx14.cpp:3:25: error: static data member 'v' already has an initializer
static constexpr T v{};
^
clang_cxx14.cpp:10:21: note: in instantiation of static data member 'A::v<int>'
requested here
auto ptr1 = &A::v<int>;
^
clang_cxx14.cpp:3:25: note: previous initialization is here
static constexpr T v{};
^
1 error generated.
No error in -std=c++17 or above
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