Bug #17643
Updated by cfis (Charlie Savage) almost 4 years ago
The following code works on Ruby 2.x, but not on Ruby 3.0.0.
``` c
// Initialize Ruby VM
int argc = 0;
char* argv = (char*)malloc(1);
argv[0] = 0;
char** pArgv = &argv;
ruby_sysinit(&argc, &pArgv);
ruby_init();
ruby_init_loadpath();
// Try to call GC.start
int state;
VALUE result = rb_eval_string_protect("GC.start", &state);
VALUE err = rb_errinfo();
VALUE rubyMessage = rb_funcall(err, rb_intern("message"), 0);
char* message = RSTRING_PTR(rubyMessage);
message is "undefined method `start' for GC:Module"
```
This is true for all the GC methods (stop, stress, etc). Note if you create a Ruby script that contains GC.start and run it using the Ruby interpreter all is well.
Is there some new special way Ruby 3 needs to be embedded?
Note I tested this on mingw, mingw builds, MSVC builds and gcc Linux (Fedora). All the same. Like I said above, this code works fine on Ruby 2.7 and earlier.