Fix lack of warning of unrecognized section names

1. Fix lack of warning by collecting all section names by moving
   m_config_sections.clear() to ArgsManager::ReadConfigFiles().
2. Add info(file name, line number) to warning message.
3. Add a test code to confirm this situation.
3. Do clear() in ReadConfigString().

1 files changed, 1 insertions, 1 deletions

diff --git a/src/init.cpp b/src/init.cpp
index 0013319ad5..f85a0da37e 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -815,7 +815,7 @@ void InitParameterInteraction()
 
     // Warn if unrecognized section name are present in the config file.
     for (const auto& section : gArgs.GetUnrecognizedSections()) {
-        InitWarning(strprintf(_("Section [%s] is not recognized."), section));
+        InitWarning(strprintf("%s:%i " + _("Section [%s] is not recognized."), section.m_file, section.m_line, section.m_name));
     }
 }