+diff -u -r ../texlive-20160523-source/texk/web2c/luatexdir/image/pdftoepdf.w ./texk/web2c/luatexdir/image/pdftoepdf.w
+--- ../texlive-20160523-source/texk/web2c/luatexdir/image/pdftoepdf.w 2016-03-25 12:44:48.000000000 +0000
++++ ./texk/web2c/luatexdir/image/pdftoepdf.w 2017-04-21 23:48:03.787934684 +0000
+@@ -71,7 +72,12 @@
+ ck = (char *) malloc(PDF_CHECKSUM_SIZE);
+ if (ck == NULL)
+ formatted_error("pdf inclusion","out of memory while processing '%s'", a);
+- snprintf(ck, PDF_CHECKSUM_SIZE, "%" PRIu64 "_%" PRIu64, (uint64_t) size,(uint64_t) mtime);
++ snprintf(ck, PDF_CHECKSUM_SIZE, "%"
++ PRIu64
++ "_%"
++ PRIu64,
++ (uint64_t) size,
++ (uint64_t) mtime);
+ } else {
+ switch (fe) {
+ case FE_FAIL: