[SYCL-Upstreaming] Fix a crash

clang/lib/Sema/TreeTransform.h

@@ -12936,6 +12936,11 @@ ExprResult TreeTransform<Derived>::TransformSYCLUniqueStableNameExpr(
 template <typename Derived>
 StmtResult TreeTransform<Derived>::TransformUnresolvedSYCLKernelCallStmt(
     UnresolvedSYCLKernelCallStmt *S) {
+  auto *FD = cast<FunctionDecl>(SemaRef.CurContext);
+  const auto *SKEPAttr = FD->getAttr<SYCLKernelEntryPointAttr>();
+  if (!SKEPAttr || SKEPAttr->isInvalidAttr())
+    return StmtError();
+
   ExprResult IdExpr = getDerived().TransformExpr(S->getKernelLaunchIdExpr());
 
   if (IdExpr.isInvalid())

clang/test/SemaSYCL/sycl-kernel-entry-point-attr-kernel-name.cpp

@@ -124,3 +124,25 @@ struct B19 {
 };
 // expected-note@+1 {{in instantiation of template class 'B19<int>' requested here}}
 B19<int> b19;
+
+struct auto_name;
+
+// expected-error@+4 {{the 'clang::sycl_kernel_entry_point' kernel name argument conflicts with a previous declaration}}
+// expected-note@+3 {{previous declaration is here}}
+template <typename KernelName, typename KernelType>
+[[clang::sycl_kernel_entry_point(KernelName)]]
+void __kernel_single_task(const KernelType KernelFunc) {
+  KernelFunc();
+}
+
+template <typename KernelType, typename KernelName = auto_name>
+void pf(KernelType K) {
+  // expected-note@+1 {{requested here}}
+  __kernel_single_task<KernelName>(K);
+}
+
+void foo() {
+  pf([](){});
+  // expected-note@+1 {{requested here}}
+  pf([](){});
+}