Fixrb_obj_classname to return NULL if the class has no name.

aardvark179 · aardvark179 · commit c7526024fbe6 · 2019-03-13T20:33:47.000Z
diff --git a/src/main/c/cext/ruby.c b/src/main/c/cext/ruby.c
@@ -475,7 +475,12 @@ void rb_obj_call_init(VALUE object, int argc, const VALUE *argv) {
 }
 
 const char *rb_obj_classname(VALUE object) {
-  return RSTRING_PTR(RUBY_CEXT_INVOKE("rb_obj_classname", object));
+  VALUE str = RUBY_CEXT_INVOKE("rb_obj_classname", object);
+  if (str != Qnil) {
+    return RSTRING_PTR(str);
+  } else {
+    return NULL;
+  }
 }
 
 VALUE rb_obj_id(VALUE object) {

Original file line number	Diff line number	Diff line change
`@@ -475,7 +475,12 @@ void rb_obj_call_init(VALUE object, int argc, const VALUE *argv) {`
`475`	`475`	`}`
`476`	`476`
`477`	`477`	`const char *rb_obj_classname(VALUE object) {`
`478`		`- return RSTRING_PTR(RUBY_CEXT_INVOKE("rb_obj_classname", object));`
	`478`	`+ VALUE str = RUBY_CEXT_INVOKE("rb_obj_classname", object);`
	`479`	`+ if (str != Qnil) {`
	`480`	`+ return RSTRING_PTR(str);`
	`481`	`+ } else {`
	`482`	`+ return NULL;`
	`483`	`+ }`
`479`	`484`	`}`
`480`	`485`
`481`	`486`	`VALUE rb_obj_id(VALUE object) {`