From bb2ce3cdb8833c246091e4dbf77ae0233112085b Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Tue, 14 Apr 2020 10:26:27 -0400
Subject: [PATCH 031/179] FIXME: implement region2::get_base_region

---
 gcc/analyzer/region-model2.cc | 22 ++++++++++++++++++++++
 gcc/analyzer/region-model2.h  |  1 +
 2 files changed, 23 insertions(+)

diff --git a/gcc/analyzer/region-model2.cc b/gcc/analyzer/region-model2.cc
index 9c71831a06b..6c96abcd6c7 100644
--- a/gcc/analyzer/region-model2.cc
+++ b/gcc/analyzer/region-model2.cc
@@ -812,6 +812,28 @@ region2::operator== (const region2 &other) const
     }
 }
 
+/* FIXME.  */
+
+const region2 *
+region2::get_base_region () const
+{
+  const region2 *iter = this;
+  while (iter)
+    {
+      switch (iter->get_kind ())
+	{
+	  //case RK_element_region:
+	case RK_FIELD:
+	  iter = iter->get_parent_region ();
+	  continue;
+	default:
+	  return iter;
+	}
+    }
+  return iter;
+}
+
+
 /* Set this region2's value to RHS_SVAL (or potentially a variant of it,
    for some kinds of casts).  */
 #if 0
diff --git a/gcc/analyzer/region-model2.h b/gcc/analyzer/region-model2.h
index 3758b9bfdef..db5e66f8678 100644
--- a/gcc/analyzer/region-model2.h
+++ b/gcc/analyzer/region-model2.h
@@ -560,6 +560,7 @@ public:
   virtual const symbolic_region2 *dyn_cast_symbolic_region2 () const { return NULL; }
 
   region2 *get_parent_region () const { return m_parent; }
+  const region2 *get_base_region () const;
 
 #if 0
   void set_value (region_model2 &model, region_id this_rid, svalue2_id rhs_sid,
-- 
2.21.0