From: merch-redmine@... Date: 2019-07-23T03:12:45+00:00 Subject: [ruby-core:93876] [Ruby master Bug#10466] rb_eval_string_wrap does not actually wrap in a module binding Issue #10466 has been updated by jeremyevans0 (Jeremy Evans). File rb_eval_string_wrap_cref.patch added I agree this a bug. The documentation states for `rb_eval_string_wrap` that `This is same as the binding for loaded libraries on "load('foo', true)"`, but that doesn't appear to be the case. `load('foo', true)` evaluates with an anonymous module in `Module.nesting`, but `rb_eval_string_wrap` uses an empty `Module.nesting`. The attached patch should fix the issue by setting a cref, so that `rb_eval_string_wrap` evaluates the string with an anonymous module in `Module.nesting`. I'm not sure if this is the best way to fix it, and would appreciate if another committer could review this patch. Unfortunately, there are no tests for the `rb_eval_string_wrap` function and nothing internally seems to use this method. ---------------------------------------- Bug #10466: rb_eval_string_wrap does not actually wrap in a module binding https://bugs.ruby-lang.org/issues/10466#change-79840 * Author: silverhammermba (Max Anselm) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.1.4p265 (2014-10-27 revision 48166) [x86_64-linux] * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN ---------------------------------------- `rb_eval_string_wrap` says that it "evaluates the given string under a module binding in an isolated binding", but this isn't true. Run the following: ~~~ #include int main(int argc, char* argv[]) { ruby_init(); int state; rb_eval_string_protect("X = 2", &state); rb_eval_string_wrap("X = 3", &state); rb_eval_string_protect("puts X", &state); return ruby_cleanup(0); } ~~~ ### Expected: outputs 2 ### Actual: outputs ~~~ eval:1: warning: already initialized constant X eval:1: warning: previous definition of X was here 3 ~~~ It looks like `rb_eval_string_wrap` _tries_ to wrap it ~~~ th->top_wrapper = rb_module_new(); th->top_self = rb_obj_clone(rb_vm_top_self()); rb_extend_object(th->top_self, th->top_wrapper); ~~~ But it ends up calling `ruby_eval_string_from_file` which uses `rb_vm_top_self()` as `self`, thus undoing the wrapping. `rb_load` can perform similar wrapping, but there it works properly. ---Files-------------------------------- rb_eval_string_wrap_cref.patch (1.79 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: