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-rw-r--r--src/constrain.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/constrain.cpp b/src/constrain.cpp
index 3655396..66b4505 100644
--- a/src/constrain.cpp
+++ b/src/constrain.cpp
@@ -359,6 +359,8 @@ constrain_call(TEnv& tenv, Constraints& c, const ATuple* call) throw(Error)
argsT.push_back(tenv.var(*i));
if (argsT.head)
argsT.head->loc = call->loc;
+ else
+ argsT.head = new ATuple(NULL, NULL, Cursor());
c.constrain(tenv, head, tup(head->loc, tenv.Fn, argsT.head, retT, 0));
c.constrain(tenv, call, retT);
}