From 310f95183a026af2d7854f830b185116aa770852 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 18 Aug 1999 23:05:23 +0000
Subject: Update.

	* libio/fileops.c (_IO_file_xsgetn): Allocate buffer if none is
	allocated so far.  [PR libc/1261].
---
 libio/fileops.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'libio')

diff --git a/libio/fileops.c b/libio/fileops.c
index decb9d7..7c6e271 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -849,6 +849,17 @@ _IO_file_xsgetn (fp, data, n)
 
   want = n;
 
+  if (fp->_IO_buf_base == NULL)
+    {
+      /* Maybe we already have a push back pointer.  */
+      if (fp->_IO_save_base != NULL)
+	{
+	  free (fp->_IO_save_base);
+	  fp->_flags &= ~_IO_IN_BACKUP;
+	}
+      _IO_doallocbuf (fp);
+    }
+
   while (want > 0)
     {
       have = fp->_IO_read_end - fp->_IO_read_ptr;
-- 
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