From 2dd1f9fa5a7427096b74aa85258ec2feeb93c104 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 1 Jun 2023 12:22:26 +0200
Subject: Diagnose null include, operation-specific variable values

While assigning null directly is unlikely, it's fairly easy via a variable
expansion. Real-world example:

./: exe{tensor}: include = $config.Eigen.unsupported
---
 libbuild2/target.hxx | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'libbuild2/target.hxx')

diff --git a/libbuild2/target.hxx b/libbuild2/target.hxx
index d01e8b7..d4ad780 100644
--- a/libbuild2/target.hxx
+++ b/libbuild2/target.hxx
@@ -1472,9 +1472,7 @@ namespace build2
   }
 
   include_type
-  include (action, const target&,
-           const prerequisite_member&,
-           lookup* = nullptr);
+  include (action, const target&, const prerequisite_member&, lookup* = nullptr);
 
   // A "range" that presents a sequence of prerequisites (e.g., from
   // group_prerequisites()) as a sequence of prerequisite_member's. For each
-- 
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