unsafe-perform-io: force the returned value

In nix::EvalState::forceValue, a tApp will result in a function call but the return value will not be forced further. The upshot of this is that all primops must return a forced value since everything in nix expects forceValue to result in a real value.
shlevy · Nov 21, 2014 · 3b8a20c · 3b8a20c
1 parent c77f247
commit 3b8a20c
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diff --git a/configure.ac b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([nix-exec], [3.0.0])
+AC_INIT([nix-exec], [3.0.1])
 
 LT_INIT([disable-static])
 

diff --git a/src/run-io.cc b/src/run-io.cc
@@ -158,6 +158,7 @@ static void unsafe( nix::EvalState & state
                   , nix::Value & v
                   ) {
   run_io(state, args[0], &pos, v);
+  state.forceValue(v);
 }
 
 void setup_unsafe_perform_io(nix::EvalState & state, nix::Value & v) {