2 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index a76a555f..eacf3c47 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2019-09-30         John E. Malmberg     <wb8tyw@qsl.net>
+
+	* custom.h: OpenVMS does not provide ULLONG_MAX
+
 2019-09-20  Florian Weimer  <fweimer@redhat.com>
 
 	* configure.ac (PRINTF_HAS_F_FORMAT): Include <string.h> for
diff --git a/custom.h b/custom.h
index 44ae50ef..787e08bf 100644
--- a/custom.h
+++ b/custom.h
@@ -50,6 +50,11 @@
 #ifndef SIZE_MAX
 #define SIZE_MAX __INT32_MAX
 #endif
+#ifndef __VAX
+#ifndef ULLONG_MAX
+#define ULLONG_MAX __UINT64_MAX
+#endif
+#endif
 #endif
 
 /* For QNX, based on submission from Michael Hunter, mphunter@qnx.com */