1 files changed, 1 insertions, 0 deletions

diff --git a/src/w32.c b/src/w32.c
index 5ac66181403..b89e5104dc0 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -7157,6 +7157,7 @@ system_process_attributes (Lisp_Object pid)
                          code_convert_string_norecord (tem, Vlocale_coding_system, 0)),
                  attrs);
 
+  memstex.dwLength = sizeof (memstex);
   if (global_memory_status_ex (&memstex))
 #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300)
     totphys = memstex.ullTotalPhys / 1024.0;