From 3e09aa9f11e855bc0979d4e0920c1059a4c2e319 Mon Sep 17 00:00:00 2001
From: Elliott Sales de Andrade <quantum.analyst@gmail.com>
Date: Wed, 24 Aug 2016 15:47:07 -0400
Subject: Don't allow @OUTPUT@ when capturing output.

---
 mesonbuild/build.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index 48d7843..ace4853 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -1015,6 +1015,9 @@ class CustomTarget:
             else:
                 raise InvalidArguments('Argument %s in "command" is invalid.' % i)
         self.command = final_cmd
+        if self.capture and '@OUTPUT@' in self.command:
+            raise InvalidArguments(
+                '@OUTPUT@ is not allowed when capturing output.')
         if 'install' in kwargs:
             self.install = kwargs['install']
             if not isinstance(self.install, bool):
-- 
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