X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fvalue-labels.c;h=1080cdff1d82d207aecd0577cc16ad685c25d1ed;hb=32538f9f35aee7145a49971f9dae1394a1a201b5;hp=0b2ae3f6323575dc9711c1de1f8b88f4e34d0df4;hpb=409300edc12ed72186b67704e529584d87fd91ba;p=pspp

diff --git a/src/data/value-labels.c b/src/data/value-labels.c
index 0b2ae3f632..1080cdff1d 100644
--- a/src/data/value-labels.c
+++ b/src/data/value-labels.c
@@ -362,7 +362,13 @@ val_labs_equal (const struct val_labs *a, const struct val_labs *b)
 {
   const struct val_lab *label;
 
-  if (val_labs_count (a) != val_labs_count (b) || a->width != b->width)
+  if (val_labs_count (a) != val_labs_count (b))
+    return false;
+
+  if (a == NULL || b == NULL)
+    return true;
+
+  if (a->width != b->width)
     return false;
 
   HMAP_FOR_EACH (label, struct val_lab, node, &a->labels)