Work around ksh93 bug that broke config.status

* lib/autoconf/status.m4 (_AC_OUTPUT_HEADER):
Use ‘>&1’, which is a no-op, to work around a bug in ksh93
Version JM 93t+ 2010-03-05 as used in OpenIndiana.
The bug causes ‘printf "foo"’ to mistakenly succeed in
some cases even though the underlying ‘write’ syscall fails.
The ‘>&1’ causes the printf to fail, as it should.

diff --git a/lib/autoconf/status.m4 b/lib/autoconf/status.m4
index d2ab823591936f6c22b9325e86a299d82f020d6f..dd2cb40795709ed2620457c3d7232b14c4cd8c63 100644 (file)
--- a/lib/autoconf/status.m4
+++ b/lib/autoconf/status.m4
@@ -880,7 +880,7 @@ m4_define([_AC_OUTPUT_HEADER],
   #
   if test x"$ac_file" != x-; then
     {
-      AS_ECHO(["/* $configure_input  */"]) \
+      AS_ECHO(["/* $configure_input  */"]) >&1 \
       && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
     } >"$ac_tmp/config.h" \
       || AC_MSG_ERROR([could not create $ac_file])
@@ -892,7 +892,7 @@ m4_define([_AC_OUTPUT_HEADER],
        || AC_MSG_ERROR([could not create $ac_file])
     fi
   else
-    AS_ECHO(["/* $configure_input  */"]) \
+    AS_ECHO(["/* $configure_input  */"]) >&1 \
       && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
       || AC_MSG_ERROR([could not create -])
   fi