Fix build errors

include/LightGBM/c_api.h

@@ -1576,6 +1576,13 @@ LIGHTGBM_C_EXPORT int LGBM_ObjectiveFunctionInit(ObjectiveFunctionHandle handle,
                                                  int *num_data,
                                                  DatasetHandle dataset);
 
+/*!
+ */
+LIGHTGBM_C_EXPORT int LGBM_ObjectiveFunctionEval(ObjectiveFunctionHandle handle,
+                                                 const double* score,
+                                                 float* grad,
+                                                 float* hess);
+
 /*!
  */
 LIGHTGBM_C_EXPORT int LGBM_ObjectiveFunctionFree(ObjectiveFunctionHandle handle);

src/io/config_auto.cpp

@@ -326,6 +326,7 @@ const std::unordered_set<std::string>& Config::parameter_set() {
 }
 
 void Config::GetMembersFromString(const std::unordered_map<std::string, std::string>& params) {
+  std::string tmp_str = "";
   GetString(params, "data", &data);
 
   if (GetString(params, "valid", &tmp_str)) {
@@ -587,7 +588,6 @@ void Config::GetMembersFromString(const std::unordered_map<std::string, std::str
   GetInt(params, "objective_seed", &objective_seed);
 
   GetInt(params, "num_class", &num_class);
-  std::cout << "What is this: " << num_class << std::endl;
   CHECK_GT(num_class, 0);
 
   GetBool(params, "is_unbalance", &is_unbalance);

tests/python_package_test/test_engine.py

@@ -24,7 +24,6 @@
 
 from .utils import (
     SERIALIZERS,
-    assert_all_trees_valid,
     builtin_objective,
     dummy_obj,
     load_breast_cancer,