diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -14598,7 +14598,7 @@
     DiscardCleanupsInEvaluationContext();
   }
 
-  if (LangOpts.OpenMP || LangOpts.CUDA || LangOpts.SYCLIsDevice) {
+  if (FD && (LangOpts.OpenMP || LangOpts.CUDA || LangOpts.SYCLIsDevice)) {
     auto ES = getEmissionStatus(FD);
     if (ES == Sema::FunctionEmissionStatus::Emitted ||
         ES == Sema::FunctionEmissionStatus::Unknown)
diff --git a/clang/test/SemaObjCXX/objcxx_openmp.mm b/clang/test/SemaObjCXX/objcxx_openmp.mm
new file mode 100644
--- /dev/null
+++ b/clang/test/SemaObjCXX/objcxx_openmp.mm
@@ -0,0 +1,22 @@
+// RUN: %clang_cc1 -fopenmp -fsyntax-only -verify %s
+// expected-no-diagnostics
+
+class Foo {
+  int a;
+};
+
+@interface NSObject
+@end
+
+@interface Bar : NSObject {
+  Foo *foo;
+}
+- (void)setSystemAndWindowCocoa:(class Foo *)foo_1;
+
+@end
+
+@implementation Bar : NSObject
+- (void)setSystemAndWindowCocoa:(Foo *)foo_1 {
+  foo = foo_1;
+}
+@end