================
@@ -250,6 +250,20 @@ static bool CheckSYCLKernelName(Sema &S, SourceLocation
Loc,
return false;
}
+void SemaSYCL::CheckSYCLExternalFunctionDecl(FunctionDecl *FD) {
+ const auto *SEAttr = FD->getAttr<SYCLExternalAttr>();
+ assert(SEAttr && "Missing sycl_external attribute");
+ if (!FD->isExternallyVisible()) {
+ Diag(SEAttr->getLocation(), diag::err_sycl_external_invalid_linkage)
+ << SEAttr;
+ }
----------------
tahonermann wrote:
This change will suffice to address the diagnostic issues with explicit and
implicit template instantiations. There will still be some issues with explicit
specializations due to attributes inherited from the implicit instantiation of
the corresponding declaration from the primary template, but that's ok for now.
```suggestion
if (!FD->isInvalidDecl() && !FD->isTemplated()) {
if (!FD->isExternallyVisible())
if (!FD->isFunctionTemplateSpecialization() ||
FD->getTemplateSpecializationInfo()->isExplicitSpecialization())
Diag(SEAttr->getLocation(), diag::err_sycl_external_invalid_linkage)
<< SEAttr;
```
https://github.com/llvm/llvm-project/pull/140282
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