ruby.h: suppress false warnings

* include/ruby/ruby.h (rb_data_object_alloc_warning): enable only
  if __builtin_choose_expr works with __builtin_constant_p so that
  warnings will be suppressed if klass is 0.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49977 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/random.c b/random.c
index fed85e0a47..99e309dbd2 100644
--- a/random.c
+++ b/random.c
@@ -491,6 +491,8 @@ fill_random_bytes(void *seed, size_t size)
 	}
 	else {
 	    if (!old_prov) {
+# undef RUBY_UNTYPED_DATA_WARNING
+# define RUBY_UNTYPED_DATA_WARNING 0
 		rb_gc_register_mark_object(Data_Wrap_Struct(0, 0, release_crypt, &prov));
 	    }
 	    else {