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: