8332818: ubsan: archiveHeapLoader.cpp:70:27: runtime error: applying non-zero offset 18446744073707454464 to null pointer

Reviewed-by: stuefe, lucy

Author: MBaesken

src/hotspot/share/cds/archiveHeapLoader.cpp

@@ -61,6 +61,9 @@ ptrdiff_t ArchiveHeapLoader::_mapped_heap_delta = 0;
 
 // Every mapped region is offset by _mapped_heap_delta from its requested address.
 // See FileMapInfo::heap_region_requested_address().
+#if defined(__clang__) || defined(__GNUC__)
+__attribute__((no_sanitize("undefined")))
+#endif
 void ArchiveHeapLoader::init_mapped_heap_info(address mapped_heap_bottom, ptrdiff_t delta, int dumptime_oop_shift) {
   assert(!_mapped_heap_relocation_initialized, "only once");
   if (!UseCompressedOops) {