prevent crash

bug-395 reported by Bohdan Tkhir
2019-03-02 21:07:26 +01:00 · 2019-03-02 21:07:26 +01:00 · 3494e6b390
parent 7bb8049d2a
commit 3494e6b390
1 changed files with 2 additions and 0 deletions
--- a/src/frontend/com_display.c
+++ b/src/frontend/com_display.c
@ -43,6 +43,8 @@ com_display(wordlist *wl)
        tfree(s);               /*DG to avoid the cp_unquote memory leak */
        if (d == NULL)
            fprintf(cp_err, "Error: no such vector as %s.\n", wl->wl_word);
+        else if (d->v_plot == NULL)
+            fprintf(cp_err, "Error: no analog vector as %s.\n", wl->wl_word);
        else
            while (d) {
                pvec(d);