From c76736eb1dde2fe5a8ae344dca2b018c79bdc218 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 30 Aug 2018 10:03:30 +0200
Subject: Handle missing export directive in export stub

If none were executed, then we assume the requested target is not exported.
---
 build2/parser.cxx | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'build2/parser.cxx')

diff --git a/build2/parser.cxx b/build2/parser.cxx
index 6d025a6..1dd49b6 100644
--- a/build2/parser.cxx
+++ b/build2/parser.cxx
@@ -1509,6 +1509,9 @@ namespace build2
 
     export_value_ = move (rhs).as<names> ();
 
+    if (export_value_.empty ())
+      fail (l) << "empty value in export";
+
     if (tt == type::newline)
       next (t, tt);
     else if (tt != type::eos)
-- 
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