diff -rupN wrapper_3.5.25_src/src/c/logger.c wrapper_3.5.25_src_patched/src/c/logger.c
--- wrapper_3.5.25_src/src/c/logger.c   2014-09-11 15:30:01.816798726 +0200
+++ wrapper_3.5.25_src_patched/src/c/logger.c   2014-09-11 15:41:12.684771272 +0200
@@ -3099,30 +3099,23 @@ void checkAndRollLogs(const TCHAR *nowDa
             return;
         }

-        /* Find out the current size of the file.  If the file is currently open then we need to
-         *  use ftell to make sure that the buffered data is also included. */
-        if (logfileFP != NULL) {
-            /* File is open */
-            if ((position = ftell(logfileFP)) < 0) {
-                _tprintf(TEXT("Unable to get the current logfile size with ftell: %s\n"), getLastErrorText());
+        /* Due to a memory leak when using ftell the following code is used when the file is both opened or closed
+          See https://sourceware.org/git/?p=glibc.git;a=commit;h=984c0ea97f649c869130a1ff099098e2b6f70aad
+           As soon as this fix is in mainstream linux (Amazon linux images), this patch can be removed.
+        */
+        if (_tstat(logFilePath, &fileStat) != 0) {
+            if (getLastError() == 2) {
+                /* File does not yet exist. */
+                position = 0;
+            } else if (getLastError() == 3) {
+                /* Path does not exist. */
+                position = 0;
+            } else {
+                _tprintf(TEXT("Unable to get the current logfile size with stat: %s\n"), getLastErrorText());
                 return;
             }
         } else {
-            /* File is not open */
-            if (_tstat(logFilePath, &fileStat) != 0) {
-                if (getLastError() == 2) {
-                    /* File does not yet exist. */
-                    position = 0;
-                } else if (getLastError() == 3) {
-                    /* Path does not exist. */
-                    position = 0;
-                } else {
-                    _tprintf(TEXT("Unable to get the current logfile size with stat: %s\n"), getLastErrorText());
-                    return;
-                }
-            } else {
-                position = fileStat.st_size;
-            }
+            position = fileStat.st_size;
         }

         /* Does the log file need to rotated? */