diff -u -r ../m4-1.4.18/lib/vasnprintf.c ./lib/vasnprintf.c
--- ../m4-1.4.18/lib/vasnprintf.c	2016-12-31 13:54:42.000000000 +0000
+++ ./lib/vasnprintf.c	2019-10-02 19:32:13.576211922 +0000
@@ -4858,7 +4858,7 @@
 #endif
                   *fbp = dp->conversion;
 #if USE_SNPRINTF
-# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) || defined(__ANDROID__))
                 fbp[1] = '%';
                 fbp[2] = 'n';
                 fbp[3] = '\0';