diff options
| -rw-r--r-- | src/libexpr/primops.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 9e7651da725f..57dc7bd1279d 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -271,7 +271,18 @@ static void prim_isNull(EvalState & state, const Pos & pos, Value * * args, Valu static void prim_isFunction(EvalState & state, const Pos & pos, Value * * args, Value & v) { state.forceValue(*args[0]); - mkBool(v, args[0]->type == tLambda); + bool res; + switch (args[0]->type) { + case tLambda: + case tPrimOp: + case tPrimOpApp: + res = true; + break; + default: + res = false; + break; + } + mkBool(v, res); } |