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/* Windows support code to wrap differences between different
versions of the Microsoft C libaries.
Copyright (C) 2021-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef __MINGW32__
#include <_mingw.h>
#endif
#include <stdio.h>
/* The D runtime library defines stdin, stdout, and stderr as extern(C) symbols
in the core.stdc.stdio module, and require initializing at start-up. */
__attribute__((weakref ("stdin")))
static FILE *core_stdc_stdin;
__attribute__((weakref ("stdout")))
static FILE *core_stdc_stdout;
__attribute__((weakref ("stderr")))
static FILE *core_stdc_stderr;
/* Set to 1 if runtime is using libucrt.dll. */
unsigned char msvcUsesUCRT;
void
init_msvc (void)
{
core_stdc_stdin = stdin;
core_stdc_stdout = stdout;
core_stdc_stderr = stderr;
#if __MSVCRT_VERSION__ >= 0xE00
msvcUsesUCRT = 1;
#endif
}
/* Phobos std.stdio module assumes these functions are present at link time,
and not absent or macros. */
#ifdef _fgetc_nolock
#undef _fgetc_nolock
int
_fgetc_nolock (FILE *fp)
{
fp->_cnt--;
if (fp->_cnt >= 0)
{
const int c = *fp->_ptr;
fp->_ptr++;
return c & 0xff;
}
else
return _filbuf (fp);
}
#endif /* _fgetc_nolock */
#ifdef _fputc_nolock
#undef _fputc_nolock
int
_fputc_nolock (int c, FILE *fp)
{
fp->_cnt--;
if (fp->_cnt >= 0)
{
*fp->_ptr = (char) c;
fp->_ptr++;
return c & 0xff;
}
else
return _flsbuf (c, fp);
}
#endif /* _fputc_nolock */
#ifdef rewind
#undef rewind
void
rewind (FILE *fp)
{
fseek (fp, 0, SEEK_SET);
fp->_flag &= ~_IOERR;
}
#endif /* rewind */
#ifdef clearerr
#undef clearerr
void
clearerr (FILE *fp)
{
fp->_flag &= ~(_IOERR | _IOEOF);
}
#endif /* clearerr */
#ifdef feof
#undef feof
int
feof (FILE *fp)
{
return fp->_flag & _IOEOF;
}
#endif /* feof */
#ifdef ferror
#undef ferror
int
ferror (FILE *fp)
{
return fp->_flag & _IOERR;
}
#endif /* ferror */
#ifdef fileno
#undef fileno
int
fileno (FILE *fp)
{
return fp->_file;
}
#endif /* fileno */
/* Phobos std.stdio module has a dependency on the UCRT library, so provide
stubs that forward to the nearest equivalent. */
#if __MSVCRT_VERSION__ < 0x800
wint_t
_fgetwc_nolock (FILE *fp)
{
return fgetwc (fp);
}
wint_t
_fputwc_nolock (wchar_t c, FILE *fp)
{
return fputwc(c, fp);
}
#endif /* __MSVCRT_VERSION__ < 0x800*/
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