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-rw-r--r--libio/wmemstream.c33
1 files changed, 17 insertions, 16 deletions
diff --git a/libio/wmemstream.c b/libio/wmemstream.c
index 1bdbae9fe8..c92d2da4b2 100644
--- a/libio/wmemstream.c
+++ b/libio/wmemstream.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -26,15 +26,15 @@ struct _IO_FILE_wmemstream
{
_IO_strfile _sf;
wchar_t **bufloc;
- _IO_size_t *sizeloc;
+ size_t *sizeloc;
};
-static int _IO_wmem_sync (_IO_FILE* fp) __THROW;
-static void _IO_wmem_finish (_IO_FILE* fp, int) __THROW;
+static int _IO_wmem_sync (FILE* fp) __THROW;
+static void _IO_wmem_finish (FILE* fp, int) __THROW;
-static const struct _IO_jump_t _IO_wmem_jumps =
+static const struct _IO_jump_t _IO_wmem_jumps libio_vtable =
{
JUMP_INIT_DUMMY,
JUMP_INIT (finish, _IO_wmem_finish),
@@ -61,8 +61,8 @@ static const struct _IO_jump_t _IO_wmem_jumps =
/* Open a stream that writes into a malloc'd buffer that is expanded as
necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
and the number of characters written on fflush or fclose. */
-_IO_FILE *
-open_wmemstream (wchar_t **bufloc, _IO_size_t *sizeloc)
+FILE *
+open_wmemstream (wchar_t **bufloc, size_t *sizeloc)
{
struct locked_FILE
{
@@ -81,7 +81,7 @@ open_wmemstream (wchar_t **bufloc, _IO_size_t *sizeloc)
new_f->fp._sf._sbf._f._lock = &new_f->lock;
#endif
- buf = calloc (1, _IO_BUFSIZ);
+ buf = calloc (1, BUFSIZ);
if (buf == NULL)
{
free (new_f);
@@ -90,20 +90,23 @@ open_wmemstream (wchar_t **bufloc, _IO_size_t *sizeloc)
_IO_no_init (&new_f->fp._sf._sbf._f, 0, 0, &new_f->wd, &_IO_wmem_jumps);
_IO_fwide (&new_f->fp._sf._sbf._f, 1);
_IO_wstr_init_static (&new_f->fp._sf._sbf._f, buf,
- _IO_BUFSIZ / sizeof (wchar_t), buf);
+ BUFSIZ / sizeof (wchar_t), buf);
new_f->fp._sf._sbf._f._flags2 &= ~_IO_FLAGS2_USER_WBUF;
- new_f->fp._sf._s._allocate_buffer = (_IO_alloc_type) malloc;
- new_f->fp._sf._s._free_buffer = (_IO_free_type) free;
+ new_f->fp._sf._s._allocate_buffer_unused = (_IO_alloc_type) malloc;
+ new_f->fp._sf._s._free_buffer_unused = (_IO_free_type) free;
new_f->fp.bufloc = bufloc;
new_f->fp.sizeloc = sizeloc;
- return (_IO_FILE *) &new_f->fp._sf._sbf;
+ /* Disable single thread optimization. BZ 21735. */
+ new_f->fp._sf._sbf._f._flags2 |= _IO_FLAGS2_NEED_LOCK;
+
+ return (FILE *) &new_f->fp._sf._sbf;
}
static int
-_IO_wmem_sync (_IO_FILE *fp)
+_IO_wmem_sync (FILE *fp)
{
struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
@@ -112,8 +115,6 @@ _IO_wmem_sync (_IO_FILE *fp)
_IO_wstr_overflow (fp, '\0');
--fp->_wide_data->_IO_write_ptr;
}
- else
- *fp->_wide_data->_IO_write_ptr = '\0';
*mp->bufloc = fp->_wide_data->_IO_write_base;
*mp->sizeloc = (fp->_wide_data->_IO_write_ptr
@@ -124,7 +125,7 @@ _IO_wmem_sync (_IO_FILE *fp)
static void
-_IO_wmem_finish (_IO_FILE *fp, int dummy)
+_IO_wmem_finish (FILE *fp, int dummy)
{
struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;