https://bugs.llvm.org/show_bug.cgi?id=51661
Bug ID: 51661
Summary: dllexported subclass causes implicit instantiation of
base class static fields
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
The following code fails to build with clang-cl 14.0.0 (ee659383):
// Define a template with a static field.
template <typename T>
struct Base {
static int member;
};
// Define a dllexported subclass using the template.
struct __declspec(dllexport) Sub: public Base<int> {};
// Declare storage for the static member:
template <>
int __declspec(dllexport) Base<int>::member;
This fails with:
test.cc(12,16): error: explicit specialization of 'member' after
instantiation
int Base<int>::member;
test.cc(4,16): note: implicit instantiation first required here
static int member;
The same code builds with CL 19.29.30037, or if I remove the dllexport
declaration from `Sub`, or if I move the static member declaration above the
definition of `Sub`.
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