Define ErrorInfo::ID explicitly.

llvm-svn: 264293

llvm/include/llvm/Support/Error.h

@@ -291,9 +291,6 @@ private:
   static char ID;
 };
 
-template <typename MyErrT, typename ParentErrT>
-char ErrorInfo<MyErrT, ParentErrT>::ID = 0;
-
 /// Special ErrorInfo subclass representing a list of ErrorInfos.
 /// Instances of this class are constructed by joinError.
 class ErrorList final : public ErrorInfo<ErrorList> {

llvm/lib/Support/Error.cpp

@@ -37,6 +37,9 @@ namespace {
 void ErrorInfoBase::anchor() {}
 char ErrorInfoBase::ID = 0;
 
+template <> char ErrorInfo<ErrorList>::ID = 0;
+template <> char ErrorInfo<ECError>::ID = 0;
+
 static ManagedStatic<ErrorErrorCategory> ErrorErrorCat;
 
 std::error_code ErrorList::convertToErrorCode() const {

llvm/unittests/Support/ErrorTest.cpp

@@ -45,6 +45,8 @@ protected:
   int Info;
 };
 
+template <> char ErrorInfo<CustomError>::ID = 0;
+
 // Custom error class with a custom base class and some additional random
 // 'info'.
 class CustomSubError : public ErrorInfo<CustomSubError, CustomError> {
@@ -70,6 +72,8 @@ protected:
   int ExtraInfo;
 };
 
+template <> char ErrorInfo<CustomSubError, CustomError>::ID = 0;
+
 static Error handleCustomError(const CustomError &CE) { return Error(); }
 
 static void handleCustomErrorVoid(const CustomError &CE) {}