From dfc89ec51c26d6226d767b79fe42e64af55e2b89 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 4 Jun 2024 19:16:00 +0300
Subject: Fix crash in cmd_sync()

---
 bdep/sync.cxx | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/bdep/sync.cxx b/bdep/sync.cxx
index 25ed63e..b7e71fb 100644
--- a/bdep/sync.cxx
+++ b/bdep/sync.cxx
@@ -1638,13 +1638,18 @@ namespace bdep
       // Failed that it will be quite confusing since we may be re-fetching
       // the same repositories over and over.
       //
-      if (cfgs.size () != 1 && *fetch)
+      // Note: counter-intuitively, we may end up here even if fetch is
+      // nullopt; see load_implicit() for details.
+      //
+      bool deep_fetch (fetch && *fetch);
+
+      if (cfgs.size () != 1 && deep_fetch)
         text << "fetching in configuration " << p.representation ();
 
       run_bpkg (bpkg_fetch_verb, co,
                 "fetch",
                 "-d", p,
-                (*fetch ? nullptr : "--shallow"),
+                (deep_fetch ? nullptr : "--shallow"),
                 cfg.reps);
     }
 
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