From 7130cf0c61e259ee6d8479cd804e9284cf6859f6 Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Tue, 3 Oct 2017 10:12:57 +0100
Subject: [PATCH] Add tools::on_startup, and warn about glibc 2.25 bug if found

https://sourceware.org/bugzilla/show_bug.cgi?id=21778
---
 src/blockchain_utilities/blockchain_export.cpp |  2 +-
 src/blockchain_utilities/blockchain_import.cpp |  2 +-
 src/common/util.cpp                            | 15 +++++++++++++++
 src/common/util.h                              |  2 ++
 src/daemon/main.cpp                            |  2 +-
 src/debug_utilities/cn_deserialize.cpp         |  2 +-
 src/debug_utilities/object_sizes.cpp           |  2 +-
 src/wallet/wallet_args.cpp                     |  2 +-
 8 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/src/blockchain_utilities/blockchain_export.cpp b/src/blockchain_utilities/blockchain_export.cpp
index 20eca09f2..d27756c66 100644
--- a/src/blockchain_utilities/blockchain_export.cpp
+++ b/src/blockchain_utilities/blockchain_export.cpp
@@ -55,7 +55,7 @@ int main(int argc, char* argv[])
   uint64_t block_stop = 0;
   bool blocks_dat = false;
 
-  tools::sanitize_locale();
+  tools::on_startup();
 
   boost::filesystem::path default_data_path {tools::get_default_data_dir()};
   boost::filesystem::path default_testnet_data_path {default_data_path / "testnet"};
diff --git a/src/blockchain_utilities/blockchain_import.cpp b/src/blockchain_utilities/blockchain_import.cpp
index d6302ea1d..8b7b0d3cb 100644
--- a/src/blockchain_utilities/blockchain_import.cpp
+++ b/src/blockchain_utilities/blockchain_import.cpp
@@ -551,7 +551,7 @@ int main(int argc, char* argv[])
   std::string m_config_folder;
   std::string db_arg_str;
 
-  tools::sanitize_locale();
+  tools::on_startup();
 
   boost::filesystem::path default_data_path {tools::get_default_data_dir()};
   boost::filesystem::path default_testnet_data_path {default_data_path / "testnet"};
diff --git a/src/common/util.cpp b/src/common/util.cpp
index 74a6babf1..30746f680 100644
--- a/src/common/util.cpp
+++ b/src/common/util.cpp
@@ -30,6 +30,10 @@
 
 #include <cstdio>
 
+#ifdef __GLIBC__
+#include <gnu/libc-version.h>
+#endif
+
 #include "include_base_utils.h"
 #include "file_io_utils.h"
 using namespace epee;
@@ -536,6 +540,17 @@ std::string get_nix_version_display_string()
     }
     return false;
   }
+  bool on_startup()
+  {
+    sanitize_locale();
+
+#ifdef __GLIBC__
+    const char *ver = gnu_get_libc_version();
+    if (!strcmp(ver, "2.25"))
+      MCLOG_RED(el::Level::Warning, "global", "Running with glibc " << ver << ", hangs may occur - change glibc version if possible");
+#endif
+    return true;
+  }
   void set_strict_default_file_permissions(bool strict)
   {
 #if defined(__MINGW32__) || defined(__MINGW__)
diff --git a/src/common/util.h b/src/common/util.h
index 48bdbbc28..2e4d6e917 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -129,6 +129,8 @@ namespace tools
 
   bool sanitize_locale();
 
+  bool on_startup();
+
   /*! \brief Defines a signal handler for win32 and *nix
    */
   class signal_handler
diff --git a/src/daemon/main.cpp b/src/daemon/main.cpp
index acc23b9f9..5d06f65dd 100644
--- a/src/daemon/main.cpp
+++ b/src/daemon/main.cpp
@@ -61,7 +61,7 @@ int main(int argc, char const * argv[])
 
     // TODO parse the debug options like set log level right here at start
 
-    tools::sanitize_locale();
+    tools::on_startup();
 
     epee::string_tools::set_module_name_and_folder(argv[0]);
 
diff --git a/src/debug_utilities/cn_deserialize.cpp b/src/debug_utilities/cn_deserialize.cpp
index a1b569554..7235ef855 100644
--- a/src/debug_utilities/cn_deserialize.cpp
+++ b/src/debug_utilities/cn_deserialize.cpp
@@ -45,7 +45,7 @@ int main(int argc, char* argv[])
   uint32_t log_level = 0;
   std::string input;
 
-  tools::sanitize_locale();
+  tools::on_startup();
 
   boost::filesystem::path output_file_path;
 
diff --git a/src/debug_utilities/object_sizes.cpp b/src/debug_utilities/object_sizes.cpp
index 47ba5cf6c..63b702700 100644
--- a/src/debug_utilities/object_sizes.cpp
+++ b/src/debug_utilities/object_sizes.cpp
@@ -64,7 +64,7 @@ int main(int argc, char* argv[])
 {
   size_logger sl;
 
-  tools::sanitize_locale();
+  tools::on_startup();
 
   mlog_configure("", true);
 
diff --git a/src/wallet/wallet_args.cpp b/src/wallet/wallet_args.cpp
index 22cfcc269..6137a0e02 100644
--- a/src/wallet/wallet_args.cpp
+++ b/src/wallet/wallet_args.cpp
@@ -91,7 +91,7 @@ namespace wallet_args
 
 
     std::string lang = i18n_get_language();
-    tools::sanitize_locale();
+    tools::on_startup();
     tools::set_strict_default_file_permissions(true);
 
     epee::string_tools::set_module_name_and_folder(argv[0]);