use snprintf instead of sprintf for CRAN compliance

Author: shikokuchuo

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: nanonext
 Type: Package
 Title: NNG (Nanomsg Next Gen) Lightweight Messaging Library
-Version: 0.7.1
+Version: 0.7.1.9000
 Description: R binding for NNG (Nanomsg Next Gen), a successor to ZeroMQ. NNG is 
     a socket library providing high-performance scalability protocols,
     implementing a cross-platform standard for messaging and communications.

NEWS.md

@@ -1,3 +1,9 @@
+# nanonext 0.7.1.9000 (development)
+
+#### Updates
+
+* For raw to character hash conversion, uses snprintf instead of sprintf for CRAN compliance.
+
 # nanonext 0.7.1
 
 #### New Features

src/tls.c

@@ -99,7 +99,7 @@ static SEXP nano_hashToChar(SEXP hash) {
   char out[sz * 2 + 1];
 
   for (R_xlen_t i = 0; i < sz; i++)
-    sprintf(&out[i * 2], "%.2x", buf[i]);
+    snprintf(&out[i * 2], 3, "%.2x", buf[i]);
 
   return Rf_mkString(out);