From 05f96bc67e0acb7a6563c52de61349c94c56478c Mon Sep 17 00:00:00 2001
From: acezen <qiaozi.zwb@alibaba-inc.com>
Date: Tue, 15 Aug 2023 06:55:09 +0000
Subject: [PATCH] [Feat][C++] Output the error message when access value in
 Result fail

---
 cpp/include/gar/external/result.hpp | 1 +
 cpp/include/gar/graph_info.h        | 4 ++--
 cpp/test/test_builder.cc            | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/cpp/include/gar/external/result.hpp b/cpp/include/gar/external/result.hpp
index a82a1daea..e2003d0fc 100644
--- a/cpp/include/gar/external/result.hpp
+++ b/cpp/include/gar/external/result.hpp
@@ -4285,6 +4285,7 @@ auto RESULT_NS_IMPL::detail::throw_bad_result_access(E&& error) -> void
   >;
 
   throw exception_type{
+    error.message(),
     detail::forward<E>(error)
   };
 #endif
diff --git a/cpp/include/gar/graph_info.h b/cpp/include/gar/graph_info.h
index df6d34ce4..370a1138f 100644
--- a/cpp/include/gar/graph_info.h
+++ b/cpp/include/gar/graph_info.h
@@ -1182,7 +1182,7 @@ class GraphInfo {
       noexcept {
     if (vertex2info_.find(label) == vertex2info_.end()) {
       return Status::KeyError("The vertex info of ", label,
-                              "is not found in graph info.");
+                              " is not found in graph info.");
     }
     return vertex2info_.at(label);
   }
@@ -1219,7 +1219,7 @@ class GraphInfo {
       const std::string& label, const std::string& property) const noexcept {
     if (vertex2info_.find(label) == vertex2info_.end()) {
       return Status::KeyError("The vertex info of ", label,
-                              "is not found in graph info.");
+                              " is not found in graph info.");
     }
     return vertex2info_.at(label).GetPropertyGroup(property);
   }
diff --git a/cpp/test/test_builder.cc b/cpp/test/test_builder.cc
index 8c8291413..a3759fb51 100644
--- a/cpp/test/test_builder.cc
+++ b/cpp/test/test_builder.cc
@@ -178,7 +178,7 @@ TEST_CASE("test_edges_builder") {
     lines++;
     std::string val;
     std::istringstream readstr(line);
-    int64_t s, d;
+    int64_t s = 0, d = 0;
     for (int i = 0; i < 3; i++) {
       getline(readstr, val, '|');
       if (i == 0) {