From a095f6a4ee1a69595bd14f96c2f241b5b0d4db48 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Kochma=C5=84ski?= <daniel@turtleware.eu>
Date: Thu, 25 May 2017 08:19:19 +0200
Subject: [PATCH] ecl_thread_internal_error: provide hint what may go wrong

---
 src/c/error.d | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/c/error.d b/src/c/error.d
index ca5170954..49432bea2 100644
--- a/src/c/error.d
+++ b/src/c/error.d
@@ -71,6 +71,9 @@ ecl_thread_internal_error(const char *s)
     fprintf(stderr, "  [%d: %s]\n", saved_errno,
             strerror(saved_errno));
   }
+  fprintf(stderr,
+          "\nDid you forget to call `ecl_import_current_thread'?\n"
+          "Exitting thread.\n");
   fflush(stderr);
 #ifdef ECL_WINDOWS_THREADS
   ExitThread(0);