diff -r af3def158d85 src/if_ruby.c
--- a/src/if_ruby.c	Sun May 08 13:30:07 2016 +0200
+++ b/src/if_ruby.c	Sun May 08 15:44:50 2016 +0200
@@ -962,7 +962,7 @@
     {
 	/* Only do this when the string isn't empty, alloc(0) causes trouble. */
 	buff = ALLOCA_N(char, RSTRING_LEN(str));
-	strcpy(buff, RSTRING_PTR(str));
+	strcpy_s(buff, sizeof(buff), RSTRING_PTR(str));
 	p = strchr(buff, '\n');
 	if (p) *p = '\0';
 	MSG(buff);