check for non-null diff

asyncvlsi · Jun 30, 2022 · 45885bb · 45885bb
1 parent db103ea
commit 45885bb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/tech/techgen.cc b/tech/techgen.cc
@@ -768,7 +768,9 @@ void emit_drc (pp_t *pp)
       }
       emit_width_spacing (pp, Technology::T->welldiff[j][i], buf);
       emit_width_spacing (pp, Technology::T->well[j][i]);
-      emit_width_spacing_c (pp, Technology::T->welldiff[j][i]->getUpC());
+      if (Technology::T->welldiff[j][i]) {
+	emit_width_spacing_c (pp, Technology::T->welldiff[j][i]->getUpC());
+      }
 
       if (Technology::T->fet[j][i] && Technology::T->diff[j][i]) {
 	int spc;