2 files changed, 7 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 012f228309..8dcf6b7c00 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Nov 24 09:49:31 2009  Tanaka Akira  <akr@fsij.org>
+
+	* error.c (rb_strerrno): return "UNKNOWNERROR" for non-zero unknown
+	  error.
+
 Tue Nov 24 09:18:33 2009  Tanaka Akira  <akr@fsij.org>
 
 	* include/ruby/intern.h (rb_strerrno): declared.
diff --git a/error.c b/error.c
index aeacc4d130..f97452941b 100644
--- a/error.c
+++ b/error.c
@@ -1261,12 +1261,13 @@ Init_syserr(void)
 char *
 rb_strerrno(int err)
 {
+    if (err == 0) return "NOERROR";
 #define defined_error(name, num) if (err == num) return name;
 #define undefined_error(name) 
 #include "known_errors.inc"
 #undef defined_error
 #undef undefined_error
-    return "NOERROR";
+    return "UNKNOWNERROR";
 }
 
 static void