X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fdup2.m4;h=dc3070c0d9ac0d892b2bc71cad45b189ba400c5a;hb=6b24f60dad0f97704ae07d9688de7f31c1923bf7;hp=fc86e8085babcbd500bafb28599d77b80952a68e;hpb=6d3de8267949cc5cf4f5ff98efcd132d93a9c861;p=gnulib.git

diff --git a/m4/dup2.m4 b/m4/dup2.m4
index fc86e8085..dc3070c0d 100644
--- a/m4/dup2.m4
+++ b/m4/dup2.m4
@@ -1,5 +1,5 @@
-#serial 18
-dnl Copyright (C) 2002, 2005, 2007, 2009-2012 Free Software Foundation, Inc.
+#serial 20
+dnl Copyright (C) 2002, 2005, 2007, 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -39,6 +39,11 @@ AC_DEFUN([gl_FUNC_DUP2],
             /* Many gnulib modules require POSIX conformance of EBADF.  */
             if (dup2 (2, 1000000) == -1 && errno != EBADF)
               result |= 16;
+            /* Flush out some cygwin core dumps.  */
+            if (dup2 (2, -1) != -1 || errno != EBADF)
+              result |= 32;
+            dup2 (2, 255);
+            dup2 (2, 256);
             return result;
            ])
         ],
@@ -62,6 +67,7 @@ AC_DEFUN([gl_FUNC_DUP2],
       *yes) ;;
       *)
         REPLACE_DUP2=1
+        AC_CHECK_FUNCS([setdtablesize])
         ;;
     esac
   fi