[patch] Fix failure to cleanup input-only stream buffers in preparation for BZ#16734 fix

[Paul Pluzhnikov <ppluzhnikov at gmail dot com>]

Greetings,

In preparation for BZ#16734 fix, I've build libc with (not intended to commit):

diff --git a/libio/libioP.h b/libio/libioP.h
index d8604ca..d1699de 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -719,7 +719,7 @@ extern _IO_off64_t _IO_seekpos_unlocked (_IO_FILE
*, _IO_off64_t, int)
 # endif
 #endif

-#if _G_HAVE_MMAP
+#if _G_HAVE_MMAP && 0

 # include <unistd.h>
 # include <fcntl.h>
... etc.

This results in 3 mtrace failures:

FAIL: misc/tst-error1-mem
FAIL: posix/bug-regex31-mem
FAIL: posix/tst-fnmatch-mem

The last two of them are because input-only FILE streams need the same
buffer cleanup as writable streams.

Attached patch fixes these two failures.


2015-02-16  Paul Pluzhnikov  <ppluzhnikov@google.com>

        * libio/genops.c (_IO_unbuffer_write): Cleanup read-only
streams as well.



-- 
Paul Pluzhnikov

Attachment: bz16734-cleanup.patch2.txt
Description: Text document