Fix another latent bug in Regexp::Walker<T>::Reset().

Change-Id: I41ade89efd93fed2a704d718659476eeb9fe6f83 Reviewed-on: https://code-review.googlesource.com/c/re2/+/59390 Reviewed-by: Perry Lorier <[email protected]> Reviewed-by: Paul Wankadia <[email protected]>
google · Oct 27, 2021 · 7424791 · 7424791
1 parent e90569d
commit 7424791
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/re2/walker-inl.h b/re2/walker-inl.h
@@ -148,7 +148,8 @@ template<typename T> void Regexp::Walker<T>::Reset() {
   if (!stack_.empty()) {
     LOG(DFATAL) << "Stack not empty.";
     while (!stack_.empty()) {
-      delete[] stack_.top().child_args;
+      if (stack_.top().re->nsub_ > 1)
+        delete[] stack_.top().child_args;
       stack_.pop();
     }
   }