From 7a9781a94cb1ab5878fa1a0e91e58f8c28d75134 Mon Sep 17 00:00:00 2001
From: gabime <gmelman1@gmail.com>
Date: Tue, 2 Dec 2014 02:16:09 +0200
Subject: [PATCH] throw spdlog_err on format errors

---
 include/spdlog/details/pattern_formatter_impl.h | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/include/spdlog/details/pattern_formatter_impl.h b/include/spdlog/details/pattern_formatter_impl.h
index e7561608..6a0c4ee9 100644
--- a/include/spdlog/details/pattern_formatter_impl.h
+++ b/include/spdlog/details/pattern_formatter_impl.h
@@ -460,7 +460,7 @@ inline void spdlog::pattern_formatter::handle_flag(char flag)
 {
     switch (flag)
     {
-    // logger name
+        // logger name
     case 'n':
         _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::name_formatter()));
         break;
@@ -574,10 +574,17 @@ inline void spdlog::pattern_formatter::handle_flag(char flag)
 
 inline void spdlog::pattern_formatter::format(details::log_msg& msg)
 {
-    for (auto &f : _formatters)
+    try
     {
-        f->format(msg);
+        for (auto &f : _formatters)
+        {
+            f->format(msg);
+        }
+        //write eol
+        msg.formatted.write(details::os::eol(), details::os::eol_size());
+    }
+    catch(const fmt::FormatError& e)
+    {
+        throw spdlog_ex(fmt::format("formatting error while processing format string: {}", e.what()));
     }
-    //write eol
-    msg.formatted.write(details::os::eol(), details::os::eol_size());
 }