MSVCRT_fclose() mustn't use the _flag field from the file structure
after _close() has been called. When _open_osfhandle() is used by MFC's CStdioFile, it expects write access even though it doesn't set the necessary flag bit.
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@ -1124,10 +1124,13 @@ int _wcreat(const MSVCRT_wchar_t *path, int flags)
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*/
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int _open_osfhandle(long hand, int flags)
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{
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/* _O_RDONLY (0) always matches, so set the read flag*/
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/* _O_RDONLY (0) always matches, so set the read flag
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* MFC's CStdioFile clears O_RDONLY (0)! if it wants to write to the
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* file, so set the write flag
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*/
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/* FIXME: handle more flags */
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int fd= msvcrt_alloc_fd((HANDLE)hand,flags|MSVCRT__IOREAD);
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TRACE(":handle (%ld) fd (%d) flags 0x%08x\n",hand,fd, flags |MSVCRT__IOREAD);
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int fd= msvcrt_alloc_fd((HANDLE)hand,flags|MSVCRT__IOREAD|MSVCRT__IOWRT);
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TRACE(":handle (%ld) fd (%d) flags 0x%08x\n",hand,fd, flags |MSVCRT__IOREAD|MSVCRT__IOWRT);
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return fd;
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}
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@ -1556,9 +1559,11 @@ void MSVCRT_clearerr(MSVCRT_FILE* file)
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*/
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int MSVCRT_fclose(MSVCRT_FILE* file)
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{
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int r;
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int r, flag;
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flag = file->_flag;
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r=_close(file->_file);
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return ((r==MSVCRT_EOF) || (file->_flag & MSVCRT__IOERR) ? MSVCRT_EOF : 0);
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return ((r==MSVCRT_EOF) || (flag & MSVCRT__IOERR) ? MSVCRT_EOF : 0);
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}
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/*********************************************************************
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