diff -uNr patch-2.7.6/src/util.c patch-2.7.6.mod/src/util.c
--- patch-2.7.6/src/util.c	2018-02-03 14:41:49.000000000 +0200
+++ patch-2.7.6.mod/src/util.c	2019-03-01 18:35:00.313283739 +0200
@@ -1601,7 +1601,7 @@
 }
 
 #ifndef TMPDIR
-#define TMPDIR "/tmp"
+#define TMPDIR "@TERMUX_PREFIX@/tmp"
 #endif
 
 struct try_safe_open_args