diff options
| -rw-r--r-- | src/libexpr/eval.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc index 0f7e8e385..81abe5b61 100644 --- a/src/libexpr/eval.cc +++ b/src/libexpr/eval.cc @@ -757,8 +757,16 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v) } } else { state.forceAttrs(*vAttrs, pos); - if ((j = vAttrs->attrs->find(name)) == vAttrs->attrs->end()) - throwEvalError("attribute `%1%' missing, at %2%", showAttrPath(attrPath), pos); + if ((j = vAttrs->attrs->find(name)) == vAttrs->attrs->end()) { + AttrPath staticPath; + AttrPath::const_iterator j; + for (j = attrPath.begin(); j != i; ++j) + staticPath.push_back(AttrName(getName(*j, state, env))); + staticPath.push_back(AttrName(getName(*j, state, env))); + for (j = j + 1; j != attrPath.end(); ++j) + staticPath.push_back(*j); + throwEvalError("attribute `%1%' missing, at %2%", showAttrPath(staticPath), pos); + } } vAttrs = j->value; pos2 = j->pos; |