http://llvm.org/bugs/show_bug.cgi?id=19558
Bug ID: 19558
Summary: Partial specialization of variable template causes
'unused variable' warning illegally.
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++1y
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
I've found partial specialization of variable template causes 'unused variable'
warning illegally. This issue does not occur when non-partial specialization.
// Test code
template<class T>
constexpr bool is_pointer = false;
template<class T>
constexpr bool is_pointer<T *> = true;
int main()
{
(void) is_pointer<int *>;
return 0;
}
// End of test code
Output:
prog.cc:5:16: warning: unused variable 'is_pointer' [-Wunused-const-variable]
constexpr bool is_pointer<T *> = true;
^
1 warning generated.
I expected no output.
I tested above code with clang 3.5 HEAD (trunk 206991).
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