8355069: Allocation::check_out_of_memory() should support CheckUnhandledOops mode

Reviewed-by: sspitsyn

Author: lmesnik

src/hotspot/share/gc/shared/memAllocator.cpp

@@ -126,6 +126,10 @@ bool MemAllocator::Allocation::check_out_of_memory() {
     // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support
     report_java_out_of_memory(message);
     if (JvmtiExport::should_post_resource_exhausted()) {
+#ifdef CHECK_UNHANDLED_OOPS
+      // obj is null, no need to handle, but CheckUnhandledOops is not aware about null
+      THREAD->allow_unhandled_oop(_obj_ptr);
+#endif // CHECK_UNHANDLED_OOPS
       JvmtiExport::post_resource_exhausted(
         JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_JAVA_HEAP,
         message);