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diff --git a/tiger-compiler/src/escapes/libescapes.cc b/tiger-compiler/src/escapes/libescapes.cc
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+++ b/tiger-compiler/src/escapes/libescapes.cc
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+/**
+ ** \file escapes/libescapes.cc
+ ** \brief Define exported escapes functions.
+ */
+
+#include <escapes/escapes-visitor.hh>
+#include <escapes/libescapes.hh>
+
+namespace escapes
+{
+  /** Walk the tree, and set the escape flag of variables and arguments
+      if they do escape. */
+  void escapes_compute(ast::Ast& tree)
+  {
+    /// boolean to check if an escapes pass was done in desugar
+    escapes::escaped = true;
+    EscapesVisitor escapes_compute;
+    escapes_compute(tree);
+  }
+
+  bool escaped = false;
+
+} // namespace escapes