1 files changed, 4 insertions, 0 deletions
diff --git a/Src/builtin.c b/Src/builtin.c
index f11d5aa51..99eef93aa 100644
--- a/Src/builtin.c
+++ b/Src/builtin.c
@@ -1744,6 +1744,10 @@ typeset_setbase(const char *name, Param pm, Options ops, int on, int always)
 		zwarnnam(name, "bad precision value: %s", arg);
 	    return 1;
 	}
+	if (pm->base < 2 || pm->base > 36) {
+	    zwarnnam(name, "invalid base: %d", pm->base);
+	    return 1;
+	}
     } else if (always)
 	pm->base = 0;