From c49a4f0aeefd04ea6a269693d47d1e9d91ed8ad7 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Fri, 9 Sep 2016 15:56:26 +0300
Subject: Fix crashing on empty installation directory name

---
 build2/install/rule.cxx | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'build2/install')

diff --git a/build2/install/rule.cxx b/build2/install/rule.cxx
index ebab282..f3a9bf4 100644
--- a/build2/install/rule.cxx
+++ b/build2/install/rule.cxx
@@ -307,6 +307,10 @@ namespace build2
         if (const dir_path* dn =
             lookup_install<dir_path> (t.base_scope (), var))
         {
+          if (dn->empty ())
+            fail << "empty installation directory for name " << sn <<
+              info << "did you specified empty config." << var << "?";
+
           rs = resolve (t, *dn, &var);
           d = rs.back ().dir / dir_path (++d.begin (), d.end ());
           rs.emplace_back (move (d.normalize ()), rs.back ());
-- 
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