+#ifndef _CRTIMP
+# define _CRTIMP __declspec(dllimport)
+#endif
+
+
+/* VS2005 has multiple ioinfo struct definitions through VS2005's release life
+ * VS2008-2012 have been stable but do not assume future VSs will have the
+ * same ioinfo struct, just because past struct stability. If research is done
+ * on the CRTs of future VSs, the version check can be bumped up so the newer
+ * VS uses a fixed ioinfo size. (Actually, only VS2013 (_MSC_VER 1800) hasn't
+ * been looked at; after that we cannot use the ioinfo struct anyway (see the
+ * #if above).)
+ */
+#if ! (_MSC_VER < 1400 || (_MSC_VER >= 1500 && _MSC_VER <= 1700) \
+ || defined(__MINGW32__))
+/* size of ioinfo struct is determined at runtime */
+# define WIN32_DYN_IOINFO_SIZE
+#endif
+
+#ifndef WIN32_DYN_IOINFO_SIZE
+/*
+ * Control structure for lowio file handles
+ */
+typedef struct {
+ intptr_t osfhnd;/* underlying OS file HANDLE */
+ char osfile; /* attributes of file (e.g., open in text mode?) */
+ char pipech; /* one char buffer for handles opened on pipes */
+ int lockinitflag;
+ CRITICAL_SECTION lock;
+/* this struct definition breaks ABI compatibility with
+ * not using, cl.exe's native VS version specitfic CRT. */
+# if _MSC_VER >= 1400 && _MSC_VER < 1500
+# error "This ioinfo struct is incomplete for Visual C 2005"
+# endif
+/* VS2005 CRT has at least 3 different definitions of this struct based on the
+ * CRT DLL's build number. */
+# if _MSC_VER >= 1500
+# ifndef _SAFECRT_IMPL
+ /* Not used in the safecrt downlevel. We do not define them, so we cannot
+ * use them accidentally */
+ char textmode : 7;/* __IOINFO_TM_ANSI or __IOINFO_TM_UTF8 or __IOINFO_TM_UTF16LE */
+ char unicode : 1; /* Was the file opened as unicode? */
+ char pipech2[2]; /* 2 more peak ahead chars for UNICODE mode */
+ __int64 startpos; /* File position that matches buffer start */
+ BOOL utf8translations; /* Buffer contains translations other than CRLF*/
+ char dbcsBuffer; /* Buffer for the lead byte of dbcs when converting from dbcs to unicode */
+ BOOL dbcsBufferUsed; /* Bool for the lead byte buffer is used or not */
+# endif
+# endif
+} ioinfo;
+#else
+typedef intptr_t ioinfo;
+#endif
+
+/*
+ * Array of arrays of control structures for lowio files.
+ */
+EXTERN_C _CRTIMP ioinfo* __pioinfo[];
+
+/*
+ * Definition of IOINFO_L2E, the log base 2 of the number of elements in each
+ * array of ioinfo structs.
+ */
+#define IOINFO_L2E 5