And with this additional patch, ftello() works on large files on mingw.
2024-11-14 Bruno Haible <br...@clisp.org>
ftello: Fix override on mingw.
Reported by Markus Mützel <markus.muet...@gmx.de> in
<https://lists.gnu.org/archive/html/bug-gnulib/2024-11/msg00108.html>.
* lib/ftello.c: Test whether module 'largefile' is in use, not
whether it had to override 'off_t'.
diff --git a/lib/ftello.c b/lib/ftello.c
index 88247bca8e..37fe93a34e 100644
--- a/lib/ftello.c
+++ b/lib/ftello.c
@@ -34,7 +34,7 @@ ftello (FILE *fp)
# undef ftell
# define ftello ftell
#endif
-#if _GL_WINDOWS_64_BIT_OFF_T
+#if (defined _WIN32 && !defined __CYGWIN__) && _FILE_OFFSET_BITS == 64
# undef ftello
# if HAVE__FTELLI64 /* msvc, mingw64 */
# define ftello _ftelli64
