From d53786dfb6eda448b2091c5b8ab371701851efb0 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 15 Jan 2021 11:48:43 +0200
Subject: Disable questionable unused functionality

---
 libbuild2/context.cxx | 2 ++
 libbuild2/context.hxx | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/libbuild2/context.cxx b/libbuild2/context.cxx
index b78cd27..3224dc1 100644
--- a/libbuild2/context.cxx
+++ b/libbuild2/context.cxx
@@ -896,6 +896,7 @@ namespace build2
     //text << this_thread::get_id () << " phase switch  " << o << " " << n;
   }
 
+#if 0
   phase_switch::
   phase_switch (phase_unlock&& u, phase_lock&& l)
       : old_phase (u.l->phase), new_phase (l.phase)
@@ -903,6 +904,7 @@ namespace build2
     phase_lock_instance = u.l; // Disarms phase_lock
     u.l = nullptr;             // Disarms phase_unlock
   }
+#endif
 
   phase_switch::
   ~phase_switch () noexcept (false)
diff --git a/libbuild2/context.hxx b/libbuild2/context.hxx
index e3ffa3a..edbf780 100644
--- a/libbuild2/context.hxx
+++ b/libbuild2/context.hxx
@@ -606,10 +606,12 @@ namespace build2
   // phase_lock pl;
   // phase_switch ps (move (pu), move (pl));
   //
+  // @@ Need to re-confirm it does the right thing if/when we need it.
+  //
   struct LIBBUILD2_SYMEXPORT phase_switch
   {
     phase_switch (context&, run_phase);
-    phase_switch (phase_unlock&&, phase_lock&&);
+    //phase_switch (phase_unlock&&, phase_lock&&);
     ~phase_switch () noexcept (false);
 
     run_phase old_phase, new_phase;
-- 
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