nobu	2011-07-31 18:59:01 +0900 (Sun, 31 Jul 2011)

  New Revision: 32771

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=32771

  Log:
    * io.c (rb_pipe): pipe on cygwin can succeed half but fail
      half.

  Modified files:
    trunk/ChangeLog
    trunk/io.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 32770)
+++ ChangeLog	(revision 32771)
@@ -1,3 +1,8 @@
+Sun Jul 31 18:58:59 2011  Nobuyoshi Nakada  <nobu@r...>
+
+	* io.c (rb_pipe): pipe on cygwin can succeed half but fail
+	  half.
+
 Sun Jul 31 11:31:07 2011  Kazuki Tsujimoto  <kazuki@c...>
 
 	* vm.c: check if cfp is valid. [Bug #5083] [ruby-dev:44208]
Index: io.c
===================================================================
--- io.c	(revision 32770)
+++ io.c	(revision 32771)
@@ -4914,6 +4914,14 @@
             ret = pipe(pipes);
         }
     }
+#ifdef __CYGWIN__
+    if (ret == 0 && pipes[1] == -1) {
+	close(pipes[0]);
+	pipes[0] = -1;
+	errno = ENFILE;
+	return -1;
+    }
+#endif
     if (ret == 0) {
         rb_update_max_fd(pipes[0]);
         rb_update_max_fd(pipes[1]);

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