diff options
Diffstat (limited to 'libio/oldstdfiles.c')
| -rw-r--r-- | libio/oldstdfiles.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/libio/oldstdfiles.c b/libio/oldstdfiles.c index f3dda89004..95c041a632 100644 --- a/libio/oldstdfiles.c +++ b/libio/oldstdfiles.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1993-2018 Free Software Foundation, Inc. +/* Copyright (C) 1993-2019 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 @@ -13,7 +13,7 @@ You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. + <https://www.gnu.org/licenses/>. As a special exception, if you link the code in this file with files compiled with a GNU compiler to produce an executable, @@ -27,11 +27,8 @@ #include <shlib-compat.h> #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) -/* This file provides definitions of _IO_stdin, _IO_stdout, and _IO_stderr - for C code. Compare stdstreams.cc. - (The difference is that here the vtable field is set to 0, - so the objects defined are not valid C++ objects. On the other - hand, we don't need a C++ compiler to build this file.) */ +/* This file provides legacy definitions of _IO_stdin_, _IO_stdout_, + and _IO_stderr_. See stdfiles.c for the current definitions. */ #define _IO_USE_OLD_IO_FILE #include "libioP.h" @@ -78,15 +75,19 @@ _IO_check_libio (void) if (&_IO_stdin_used == NULL) { /* We are using the old one. */ - _IO_stdin = stdin = (FILE *) &_IO_stdin_; - _IO_stdout = stdout = (FILE *) &_IO_stdout_; - _IO_stderr = stderr = (FILE *) &_IO_stderr_; + stdin = (FILE *) &_IO_stdin_; + stdout = (FILE *) &_IO_stdout_; + stderr = (FILE *) &_IO_stderr_; _IO_list_all = &_IO_stderr_; - _IO_stdin->_vtable_offset = _IO_stdout->_vtable_offset = - _IO_stderr->_vtable_offset = stdin->_vtable_offset = - stdout->_vtable_offset = stderr->_vtable_offset = + stdin->_vtable_offset = stdout->_vtable_offset + = stderr->_vtable_offset = ((int) sizeof (struct _IO_FILE) - (int) sizeof (struct _IO_FILE_complete)); + + if (_IO_stdin_.vtable != &_IO_old_file_jumps + || _IO_stdout_.vtable != &_IO_old_file_jumps + || _IO_stderr_.vtable != &_IO_old_file_jumps) + IO_set_accept_foreign_vtables (&_IO_vtable_check); } } |