1 files changed, 34 insertions, 0 deletions
diff --git a/ext/-test-/st/update/update.c b/ext/-test-/st/update/update.c
new file mode 100644
index 0000000000..33db04270c
--- /dev/null
+++ b/ext/-test-/st/update/update.c
@@ -0,0 +1,34 @@
+#include <ruby.h>
+#include <ruby/st.h>
+
+static int
+update_func(st_data_t key, st_data_t *value, st_data_t arg)
+{
+    VALUE ret = rb_yield_values(2, (VALUE)key, (VALUE)*value);
+    switch (ret) {
+      case Qfalse:
+	return ST_STOP;
+      case Qnil:
+	return ST_DELETE;
+      default:
+	*value = ret;
+	return ST_CONTINUE;
+    }
+}
+
+static VALUE
+test_st_update(VALUE self, VALUE key)
+{
+    if (st_update(RHASH_TBL(self), (st_data_t)key, update_func, 0))
+	return Qtrue;
+    else
+	return Qfalse;
+}
+
+void
+Init_update(void)
+{
+    VALUE st = rb_define_class_under(rb_define_module("Bug"), "StTable", rb_cHash);
+    rb_define_method(st, "st_update", test_st_update, 1);
+}
+