log: use localtime_r instead of std::localtime (#68)

This is thread-safe and signal-safe.
WayfireWM · Apr 16, 2024 · 5cd0c8a · 5cd0c8a
1 parent 34f3bf9
commit 5cd0c8a
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/log.cpp b/src/log.cpp
@@ -104,7 +104,10 @@ static std::string get_formatted_date_time()
     auto ms  = duration_cast<milliseconds>(now.time_since_epoch()) % 1000;
 
     std::ostringstream out;
-    out << std::put_time(std::localtime(&tt), "%d-%m-%y %H:%M:%S.");
+
+    struct tm buffer;
+    localtime_r(&tt, &buffer);
+    out << std::put_time(&buffer, "%d-%m-%y %H:%M:%S.");
     out << std::setfill('0') << std::setw(3) << ms.count();
     return out.str();
 }