diff options
| -rw-r--r-- | src/libexpr/eval.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc index 2087c7c43ffb..b8c623b1a444 100644 --- a/src/libexpr/eval.cc +++ b/src/libexpr/eval.cc @@ -779,8 +779,10 @@ void ExprLambda::eval(EvalState & state, Env & env, Value & v) void ExprApp::eval(EvalState & state, Env & env, Value & v) { - e1->eval(state, env, v); - state.callFunction(v, *(e2->maybeThunk(state, env)), v); + /* FIXME: vFun prevents GCC from doing tail call optimisation. */ + Value vFun; + e1->eval(state, env, vFun); + state.callFunction(vFun, *(e2->maybeThunk(state, env)), v); } |