1 files changed, 65 insertions, 0 deletions
diff --git a/spec/rubyspec/optional/capi/ext/proc_spec.c b/spec/rubyspec/optional/capi/ext/proc_spec.c
new file mode 100644
index 0000000000..b7a47536d9
--- /dev/null
+++ b/spec/rubyspec/optional/capi/ext/proc_spec.c
@@ -0,0 +1,65 @@
+#include "ruby.h"
+#include "rubyspec.h"
+
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef HAVE_RB_PROC_NEW
+VALUE proc_spec_rb_proc_new_function(VALUE args) {
+  return rb_funcall(args, rb_intern("inspect"), 0);
+}
+
+VALUE proc_spec_rb_proc_new(VALUE self) {
+  return rb_proc_new(proc_spec_rb_proc_new_function, Qnil);
+}
+#endif
+
+/* This helper is not strictly necessary but reflects the code in wxRuby that
+ * originally exposed issues with this Proc.new behavior.
+ */
+VALUE proc_spec_rb_Proc_new_helper(void) {
+  return rb_funcall(rb_cProc, rb_intern("new"), 0);
+}
+
+VALUE proc_spec_rb_Proc_new(VALUE self, VALUE scenario) {
+  switch(FIX2INT(scenario)) {
+    case 0:
+      return proc_spec_rb_Proc_new_helper();
+    case 1:
+      rb_funcall(self, rb_intern("call_nothing"), 0);
+      return proc_spec_rb_Proc_new_helper();
+    case 2:
+      return rb_funcall(self, rb_intern("call_Proc_new"), 0);
+    case 3:
+      return rb_funcall(self, rb_intern("call_rb_Proc_new"), 0);
+    case 4:
+      return rb_funcall(self, rb_intern("call_rb_Proc_new_with_block"), 0);
+    case 5:
+      rb_funcall(self, rb_intern("call_rb_Proc_new_with_block"), 0);
+      return proc_spec_rb_Proc_new_helper();
+    case 6:
+      return rb_funcall(self, rb_intern("call_block_given?"), 0);
+    default:
+      rb_raise(rb_eException, "invalid scenario");
+  }
+
+  return Qnil;
+}
+
+void Init_proc_spec(void) {
+  VALUE cls;
+  cls = rb_define_class("CApiProcSpecs", rb_cObject);
+
+#ifdef HAVE_RB_PROC_NEW
+  rb_define_method(cls, "rb_proc_new", proc_spec_rb_proc_new, 0);
+#endif
+
+  rb_define_method(cls, "rb_Proc_new", proc_spec_rb_Proc_new, 1);
+}
+
+#ifdef __cplusplus
+}
+#endif