mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 14:20:07 +00:00
libio: Check remaining buffer size in _IO_wdo_write (bug 31183)
The multibyte character needs to fit into the remaining buffer space,
not the already-written buffer space. Without the fix, we were never
moving the write pointer from the start of the buffer, always using
the single-character fallback buffer.
Fixes commit 04b76b5aa8
("Don't error out writing
a multibyte character to an unbuffered stream (bug 17522)").
This commit is contained in:
parent
5eabdb6a6a
commit
ecc7c3deb9
@ -55,7 +55,7 @@ _IO_wdo_write (FILE *fp, const wchar_t *data, size_t to_do)
|
||||
char mb_buf[MB_LEN_MAX];
|
||||
char *write_base, *write_ptr, *buf_end;
|
||||
|
||||
if (fp->_IO_write_ptr - fp->_IO_write_base < sizeof (mb_buf))
|
||||
if (fp->_IO_buf_end - fp->_IO_write_ptr < sizeof (mb_buf))
|
||||
{
|
||||
/* Make sure we have room for at least one multibyte
|
||||
character. */
|
||||
|
Loading…
Reference in New Issue
Block a user