diff -u -r ../coreutils-8.26/lib/stat-size.h ./lib/stat-size.h
--- ../coreutils-8.26/lib/stat-size.h	2016-07-15 15:47:39.000000000 -0400
+++ ./lib/stat-size.h	2017-01-09 16:49:31.758957157 -0500
@@ -71,9 +71,13 @@
    suffice, since "cat" sometimes multiplies the result by 4.)  If
    anyone knows of a system for which this limit is too small, please
    report it as a bug in this code.  */
-# define ST_BLKSIZE(statbuf) ((0 < (statbuf).st_blksize \
+/* Termux patch: Cast to long since on 32-bit Android this otherwise
+   results in an unsigned long, which breaks comparison with e.g.
+   signed off_t in tail.c, see:
+   https://github.com/termux/termux-app/issues/233 */
+# define ST_BLKSIZE(statbuf) ((long) ((0 < (statbuf).st_blksize \
                                && (statbuf).st_blksize <= ((size_t)-1) / 8 + 1) \
-                              ? (statbuf).st_blksize : DEV_BSIZE)
+                              ? (statbuf).st_blksize : DEV_BSIZE))
 # if defined hpux || defined __hpux__ || defined __hpux
   /* HP-UX counts st_blocks in 1024-byte units.
      This loses when mixing HP-UX and BSD file systems with NFS.  */