X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/fb911b21a156dfe5967b9c79f4f1408e4f90458b..3e7e6162870de6545f3ee53d0c52d14a6b9434ef:/src/src/string.c

diff --git a/src/src/string.c b/src/src/string.c
index 854cf0d34..52b1d2fb5 100644
--- a/src/src/string.c
+++ b/src/src/string.c
@@ -1579,8 +1579,8 @@ while (*fp)
     case 'Y':			/* gstring pointer */
       {
       gstring * zg = va_arg(ap, gstring *);
-      s = CS zg->s;
-      slen = zg->ptr;
+      if (zg) { s = CS zg->s; slen = zg->ptr;    }
+      else    { s = null;     slen = Ustrlen(s); }
       goto INSERT_GSTRING;
       }