--- a/src/hotspot/os/windows/os_windows.cpp	Wed Oct 02 17:32:08 2019 +0200
+++ b/src/hotspot/os/windows/os_windows.cpp	Mon Oct 07 13:32:44 2019 +0100
@@ -4189,8 +4189,6 @@
     if (::isalpha(buf[0]) && !::IsDBCSLeadByte(buf[0]) && buf[1] == ':' && buf[2] == '\\') {
       prefix = L"\\\\?\\";
     } else if (buf[0] == '\\' && buf[1] == '\\') {
-      assert(buf[2] != '\\');
-
       if (buf[2] == '?' && buf[3] == '\\') {
         prefix = L"";
         needs_fullpath = false;