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Diffstat (limited to 'libio/memstream.c')
-rw-r--r--libio/memstream.c35
1 files changed, 18 insertions, 17 deletions
diff --git a/libio/memstream.c b/libio/memstream.c
index 7fa5245e72..b5eaa5476c 100644
--- a/libio/memstream.c
+++ b/libio/memstream.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
@@ -25,15 +25,15 @@ struct _IO_FILE_memstream
{
_IO_strfile _sf;
char **bufloc;
- _IO_size_t *sizeloc;
+ size_t *sizeloc;
};
-static int _IO_mem_sync (_IO_FILE* fp) __THROW;
-static void _IO_mem_finish (_IO_FILE* fp, int) __THROW;
+static int _IO_mem_sync (FILE* fp) __THROW;
+static void _IO_mem_finish (FILE* fp, int) __THROW;
-static const struct _IO_jump_t _IO_mem_jumps =
+static const struct _IO_jump_t _IO_mem_jumps libio_vtable =
{
JUMP_INIT_DUMMY,
JUMP_INIT (finish, _IO_mem_finish),
@@ -60,8 +60,8 @@ static const struct _IO_jump_t _IO_mem_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_memstream (char **bufloc, _IO_size_t *sizeloc)
+FILE *
+__open_memstream (char **bufloc, size_t *sizeloc)
{
struct locked_FILE
{
@@ -80,30 +80,33 @@ __open_memstream (char **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);
return NULL;
}
- _IO_init (&new_f->fp._sf._sbf._f, 0);
+ _IO_init_internal (&new_f->fp._sf._sbf._f, 0);
_IO_JUMPS_FILE_plus (&new_f->fp._sf._sbf) = &_IO_mem_jumps;
- _IO_str_init_static_internal (&new_f->fp._sf, buf, _IO_BUFSIZ, buf);
+ _IO_str_init_static_internal (&new_f->fp._sf, buf, BUFSIZ, buf);
new_f->fp._sf._sbf._f._flags &= ~_IO_USER_BUF;
- 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;
}
libc_hidden_def (__open_memstream)
weak_alias (__open_memstream, open_memstream)
static int
-_IO_mem_sync (_IO_FILE *fp)
+_IO_mem_sync (FILE *fp)
{
struct _IO_FILE_memstream *mp = (struct _IO_FILE_memstream *) fp;
@@ -112,8 +115,6 @@ _IO_mem_sync (_IO_FILE *fp)
_IO_str_overflow (fp, '\0');
--fp->_IO_write_ptr;
}
- else
- *fp->_IO_write_ptr = '\0';
*mp->bufloc = fp->_IO_write_base;
*mp->sizeloc = fp->_IO_write_ptr - fp->_IO_write_base;
@@ -123,7 +124,7 @@ _IO_mem_sync (_IO_FILE *fp)
static void
-_IO_mem_finish (_IO_FILE *fp, int dummy)
+_IO_mem_finish (FILE *fp, int dummy)
{
struct _IO_FILE_memstream *mp = (struct _IO_FILE_memstream *) fp;