From b04b2dab22b3be3e6e77d1fcb621dced09fafb20 Mon Sep 17 00:00:00 2001
From: Dirk Zimoch <dirk.zimoch@psi.ch>
Date: Tue, 13 Aug 2019 15:13:54 +0200
Subject: [PATCH] fix astac crash

---
 modules/database/src/ioc/as/asDbLib.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/database/src/ioc/as/asDbLib.c b/modules/database/src/ioc/as/asDbLib.c
index c0fe192b0..49be480bc 100644
--- a/modules/database/src/ioc/as/asDbLib.c
+++ b/modules/database/src/ioc/as/asDbLib.c
@@ -240,6 +240,10 @@ int astac(const char *pname,const char *user,const char *location)
     char	*puser;
     char	*plocation;
 
+    if (!pname || !user || !location){
+        printf("Usage: astac \"record name\", \"user\", \"host\"\n");
+        return(1);
+    }
     paddr = dbCalloc(1,sizeof(DBADDR) + sizeof(ASCLIENTPVT));
     pasclientpvt = (ASCLIENTPVT *)(paddr + 1);
     status=dbNameToAddr(pname,paddr);