* io.c (rb_f_syscall): Add warning messages. [ruby-core:34062]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30527 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/io.c b/io.c
index 2fcc46b139..834105031d 100644
--- a/io.c
+++ b/io.c
@@ -7858,6 +7858,10 @@ rb_f_syscall(int argc, VALUE *argv)
     int num, retval = -1;
 #endif
     int i;
+ 
+    if (RTEST(ruby_verbose)) {
+	rb_warning("We plan to remove a syscall function at future release. DL(Fiddle) provides safer alternative.");
+    }
 
     rb_secure(2);
     if (argc == 0)