1 files changed, 14 insertions, 4 deletions
diff --git a/spec/ruby/optional/capi/ext/data_spec.c b/spec/ruby/optional/capi/ext/data_spec.c
index a41666f655..efefe37c3a 100644
--- a/spec/ruby/optional/capi/ext/data_spec.c
+++ b/spec/ruby/optional/capi/ext/data_spec.c
@@ -3,6 +3,7 @@
 
 #include <string.h>
 
+#ifndef RUBY_VERSION_IS_3_4
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -19,7 +20,7 @@ void sample_wrapped_struct_mark(void* st) {
 }
 
 VALUE sdaf_alloc_func(VALUE klass) {
-  struct sample_wrapped_struct* bar = malloc(sizeof(struct sample_wrapped_struct));
+  struct sample_wrapped_struct* bar = (struct sample_wrapped_struct*) malloc(sizeof(struct sample_wrapped_struct));
   bar->foo = 42;
   return Data_Wrap_Struct(klass, &sample_wrapped_struct_mark, &sample_wrapped_struct_free, bar);
 }
@@ -32,7 +33,7 @@ VALUE sdaf_get_struct(VALUE self) {
 }
 
 VALUE sws_wrap_struct(VALUE self, VALUE val) {
-  struct sample_wrapped_struct* bar = malloc(sizeof(struct sample_wrapped_struct));
+  struct sample_wrapped_struct* bar = (struct sample_wrapped_struct*) malloc(sizeof(struct sample_wrapped_struct));
   bar->foo = FIX2INT(val);
   return Data_Wrap_Struct(rb_cObject, &sample_wrapped_struct_mark, &sample_wrapped_struct_free, bar);
 }
@@ -58,15 +59,22 @@ VALUE sws_get_struct_data_ptr(VALUE self, VALUE obj) {
 
 VALUE sws_change_struct(VALUE self, VALUE obj, VALUE new_val) {
   struct sample_wrapped_struct *old_struct, *new_struct;
-  new_struct = malloc(sizeof(struct sample_wrapped_struct));
+  new_struct = (struct sample_wrapped_struct*) malloc(sizeof(struct sample_wrapped_struct));
   new_struct->foo = FIX2INT(new_val);
-  old_struct = RDATA(obj)->data;
+  old_struct = (struct sample_wrapped_struct*) RDATA(obj)->data;
   free(old_struct);
   RDATA(obj)->data = new_struct;
   return Qnil;
 }
 
+VALUE sws_rb_check_type(VALUE self, VALUE obj, VALUE other) {
+  rb_check_type(obj, TYPE(other));
+  return Qtrue;
+}
+#endif
+
 void Init_data_spec(void) {
+#ifndef RUBY_VERSION_IS_3_4
   VALUE cls = rb_define_class("CApiAllocSpecs", rb_cObject);
   rb_define_alloc_func(cls, sdaf_alloc_func);
   rb_define_method(cls, "wrapped_data", sdaf_get_struct, 0);
@@ -76,6 +84,8 @@ void Init_data_spec(void) {
   rb_define_method(cls, "get_struct_rdata", sws_get_struct_rdata, 1);
   rb_define_method(cls, "get_struct_data_ptr", sws_get_struct_data_ptr, 1);
   rb_define_method(cls, "change_struct", sws_change_struct, 2);
+  rb_define_method(cls, "rb_check_type", sws_rb_check_type, 2);
+#endif
 }
 
 #ifdef __cplusplus