usa	2017-11-15 14:18:37 +0900 (Wed, 15 Nov 2017)

  New Revision: 60772

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60772

  Log:
    Cannot call rb_thread_call_without_gvl before running VM
    
    * dir.c (readdir_without_gvl): check the VM is already initialized before
      calling rb_thread_call_without_gvl().
      [Bug #14108]

  Modified files:
    trunk/dir.c
Index: dir.c
===================================================================
--- dir.c	(revision 60771)
+++ dir.c	(revision 60772)
@@ -743,7 +743,6 @@ to_be_skipped(const struct dirent *dp) https://github.com/ruby/ruby/blob/trunk/dir.c#L743
     return FALSE;
 }
 
-#ifndef _WIN32
 static void *
 nogvl_readdir(void *ptr)
 {
@@ -755,11 +754,11 @@ nogvl_readdir(void *ptr) https://github.com/ruby/ruby/blob/trunk/dir.c#L754
 static struct dirent *
 readdir_without_gvl(struct dir_data *dirp)
 {
-    return rb_thread_call_without_gvl(nogvl_readdir, dirp, RUBY_UBF_IO, 0);
+    if (rb_cThread) /* VM is running */
+	return rb_thread_call_without_gvl(nogvl_readdir, dirp, RUBY_UBF_IO, 0);
+    else
+	return READDIR(dirp->dir, dirp->enc);
 }
-#else
-#define readdir_without_gvl(dirp) READDIR((dirp)->dir, (dirp)->enc)
-#endif
 
 /*
  *  call-seq:

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