Chain the symbol tables, not the dfn frames

1 files changed, 3 insertions, 0 deletions

diff --git a/print.c b/print.c
index 075d372..b8b617d 100644
--- a/print.c
+++ b/print.c
@@ -13,6 +13,9 @@ Rune *strline(Rune *, int);
 Rune *
 ppdatum(Datum *d)
 {
+	if(d == nil)
+		return runesmprint("<nil>");
+
 	Rune *result;
 	switch(d->tag){
 	case ArrayTag: result = pparray(d->array); break;