nobu	2015-02-03 17:23:39 +0900 (Tue, 03 Feb 2015)

  New Revision: 49483

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=49483

  Log:
    error.c: fix r49479
    
    * error.c (rb_mod_sys_fail_str): copy the given format.

  Modified files:
    trunk/error.c
Index: error.c
===================================================================
--- error.c	(revision 49482)
+++ error.c	(revision 49483)
@@ -2096,7 +2096,7 @@ rb_sys_warning(const char *fmt, ...) https://github.com/ruby/ruby/blob/trunk/error.c#L2096
 
     if (!RTEST(ruby_verbose)) return;
 
-    snprintf(buf+strlen(buf), BUFSIZ-strlen(buf), ": %s", strerror(errno_save));
+    snprintf(buf, BUFSIZ, "%s: %s", fmt, strerror(errno_save));
 
     va_start(args, fmt);
     warn_print(buf, args);

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