diff -uNr bash-5.0/lib/sh/tmpfile.c bash-5.0.mod/lib/sh/tmpfile.c
--- bash-5.0/lib/sh/tmpfile.c	2016-08-11 18:05:58.000000000 +0300
+++ bash-5.0.mod/lib/sh/tmpfile.c	2019-02-20 14:17:08.270731426 +0200
@@ -74,15 +74,11 @@
     return sys_tmpdir;
 #endif
 
-  sys_tmpdir = "/tmp";
+  sys_tmpdir = "@TERMUX_PREFIX@/tmp";
   if (file_iswdir (sys_tmpdir))
     return sys_tmpdir;
 
-  sys_tmpdir = "/var/tmp";
-  if (file_iswdir (sys_tmpdir))
-    return sys_tmpdir;
-
-  sys_tmpdir = "/usr/tmp";
+  sys_tmpdir = "@TERMUX_PREFIX@/var/tmp";
   if (file_iswdir (sys_tmpdir))
     return sys_tmpdir;