From 82dbd0ea1ff878f6699d73efd5d49c08815f84b9 Mon Sep 17 00:00:00 2001
From: Marius Gerbershagen <marius.gerbershagen@gmail.com>
Date: Sun, 24 Sep 2017 19:03:38 +0200
Subject: [PATCH] make potential_number_p thread-safe. Closes #406

---
 src/c/printer/write_symbol.d | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/c/printer/write_symbol.d b/src/c/printer/write_symbol.d
index 681aead06..c4a7d779f 100644
--- a/src/c/printer/write_symbol.d
+++ b/src/c/printer/write_symbol.d
@@ -19,7 +19,7 @@ static bool
 potential_number_p(cl_object s, int base)
 {
   /* See ANSI 2.3.1.1 */
-  static cl_index i, l;
+  cl_index i, l;
   ecl_character c;
   /* A potential number must contain at least one digit */
   bool some_digit = FALSE;