vim-patch:7.4.1975

Problem:    On MS-Windows large files (> 2Gbyte) cause problems.
Solution:   Use "off_T" instead of "off_t".  Use "stat_T" instead of "struct
            stat".  Use 64 bit system functions if available.  (Ken Takata)

8767f52fbf

Only the off_T changes are relevant, since all the "struct stat" usage
is abstracted by libuv.

src/nvim/globals.h

@@ -97,6 +97,34 @@ typedef enum {
 EXTERN long Rows INIT(= DFLT_ROWS);     // nr of rows in the screen
 EXTERN long Columns INIT(= DFLT_COLS);  // nr of columns in the screen
 
+// We use 64-bit file functions here, if available.  E.g. ftello() returns
+// off_t instead of long, which helps if long is 32 bit and off_t is 64 bit.
+// We assume that when fseeko() is available then ftello() is too.
+// Note that Windows has different function names.
+#if (defined(_MSC_VER) && (_MSC_VER >= 1300)) || defined(__MINGW32__)
+typedef __int64 off_T;
+# ifdef __MINGW32__
+#  define vim_lseek lseek64
+#  define vim_fseek fseeko64
+#  define vim_ftell ftello64
+# else
+#  define vim_lseek _lseeki64
+#  define vim_fseek _fseeki64
+#  define vim_ftell _ftelli64
+# endif
+#else
+typedef off_t off_T;
+# ifdef HAVE_FSEEKO
+#  define vim_lseek lseek
+#  define vim_ftell ftello
+#  define vim_fseek fseeko
+# else
+#  define vim_lseek lseek
+#  define vim_ftell ftell
+#  define vim_fseek(a, b, c) fseek(a, (long)b, c)
+# endif
+#endif
+
 /*
  * The characters and attributes cached for the screen.
  */