Improve error message

This commit is contained in:
Eelco Dolstra 2020-04-02 19:03:32 +02:00
parent ab47868639
commit e1fc9f6690

View file

@ -81,7 +81,7 @@ static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, V
input = lookupInRegistries(state.store, input).first; input = lookupInRegistries(state.store, input).first;
if (evalSettings.pureEval && !input->isImmutable()) if (evalSettings.pureEval && !input->isImmutable())
throw Error("in pure evaluation mode, 'fetchTree' requires an immutable input"); throw Error("in pure evaluation mode, 'fetchTree' requires an immutable input, at %s", pos);
// FIXME: use fetchOrSubstituteTree // FIXME: use fetchOrSubstituteTree
auto [tree, input2] = input->fetchTree(state.store); auto [tree, input2] = input->fetchTree(state.store);