From: Ben Gras <ben@minix3.org>
Date: Tue, 2 Nov 2010 22:01:47 +0000 (+0000)
Subject: stdio/fclose.c: reset _buf
X-Git-Tag: v3.2.0~760
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zpipe.c?a=commitdiff_plain;h=09569d399f93acffa9b59d4bea584fabb1d497ce;p=minix.git

stdio/fclose.c: reset _buf

  - if the stream gets freopen()ed, avoid buffer being seen as valid
---

diff --git a/lib/libc/stdio/fclose.c b/lib/libc/stdio/fclose.c
index 56bd0ac4a..85ecb420a 100644
--- a/lib/libc/stdio/fclose.c
+++ b/lib/libc/stdio/fclose.c
@@ -25,6 +25,7 @@ fclose(FILE *fp)
 	if (_close(fileno(fp))) retval = EOF;
 	if ( io_testflag(fp,_IOMYBUF) && fp->_buf )
 		free((void *)fp->_buf);
+	fp->_buf = NULL;
 	if (fp != stdin && fp != stdout && fp != stderr)
 		free((void *)fp);
 	return retval;