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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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