Re: [PATCH] bug 23124: rust - Fix null deref when casting

[Tom Tromey <tom@tromey.com>]

>>>>> "Dan" == Dan Robertson <danlrobertson89@gmail.com> writes:

Dan> Attached a patch that fixes bug 23124.

Thanks for the patch.

This is the right fix, but there are a few nits.  If you want to address
those, that would be nice.  If you can't, I will do it on Monday.

It is missing a ChangeLog entry.  It's normal to mention the bug in the
ChangeLog, see any of the ones mentioning "PR .../NNNN".

It needs a test, feel free to just drop the simplest thing possible into
gdb/testsuite/gdb.rust/expr.exp.  The test suite, for some reason, has a
ChangeLog of its own.

Dan> -  for (const rust_op *op : *params)
Dan> -    result.push_back (convert_ast_to_type (state, op));
Dan> +  if (params) {
Dan> +    for (const rust_op *op : *params) {
Dan> +      result.push_back (convert_ast_to_type (state, op));
Dan> +    }
Dan> +  }

In the gdb flavor of GNU style, one would format this as:

if (params != nullptr)
  {
    for (const rust_op *op : *params)
      result.push_back (convert_ast_to_type (state, op));
  }

Tom