ncurses 5.9 - patch 20121117

[ncurses.git] / progs / tabs.c

diff --git a/progs/tabs.c b/progs/tabs.c
index 07790f831d9df89d2361103d5aed75e473fa6d48..bded0b04b259812db51be662d6305ac4a7dbc00c 100644 (file)
--- a/progs/tabs.c
+++ b/progs/tabs.c
@@ -37,7 +37,7 @@
 #define USE_LIBTINFO
 #include <progs.priv.h>
 
-MODULE_ID("$Id: tabs.c,v 1.24 2012/10/27 19:53:53 tom Exp $")
+MODULE_ID("$Id: tabs.c,v 1.25 2012/11/18 01:21:47 tom Exp $")
 
 static void usage(void) GCC_NORETURN;
 
@@ -116,22 +116,24 @@ decode_tabs(const char *tab_list)
        }
     }
 
-    /*
-     * If there is only one value, then it is an option such as "-8".
-     */
-    if ((n == 0) && (value > 0)) {
-       int step = value;
-       while (n < max_cols - 1) {
-           result[n++] = value;
-           value += step;
+    if (result != 0) {
+       /*
+        * If there is only one value, then it is an option such as "-8".
+        */
+       if ((n == 0) && (value > 0)) {
+           int step = value;
+           while (n < max_cols - 1) {
+               result[n++] = value;
+               value += step;
+           }
        }
-    }
 
-    /*
-     * Add the last value, if any.
-     */
-    result[n++] = value + prior;
-    result[n] = 0;
+       /*
+        * Add the last value, if any.
+        */
+       result[n++] = value + prior;
+       result[n] = 0;
+    }
 
     return result;
 }