Re: [PATCH 3/9] Change jit.c to use type-safe registry

[Simon Marchi <simark@simark.ca>]

> diff --git a/gdb/jit.c b/gdb/jit.c
> index 62942fc7ab0..fba2482ff13 100644
> --- a/gdb/jit.c
> +++ b/gdb/jit.c
> @@ -50,8 +50,6 @@ static const char *const jit_break_name = "__jit_debug_register_code";
>  
>  static const char *const jit_descriptor_name = "__jit_debug_descriptor";
>  
> -static const struct program_space_data *jit_program_space_data = NULL;
> -
>  static void jit_inferior_init (struct gdbarch *gdbarch);
>  static void jit_inferior_exit_hook (struct inferior *inf);
>  
> @@ -263,6 +261,8 @@ struct jit_program_space_data
>    struct breakpoint *jit_breakpoint;
>  };
>  
> +static program_space_key<jit_program_space_data> jit_program_space_key;
> +
>  /* Per-objfile structure recording the addresses in the program space.
>     This object serves two purposes: for ordinary objfiles, it may
>     cache some symbols related to the JIT interface; and for
> @@ -316,29 +316,16 @@ add_objfile_entry (struct objfile *objfile, CORE_ADDR entry)
>     if not already present.  */
>  
>  static struct jit_program_space_data *
> -get_jit_program_space_data (void)
> +get_jit_program_space_data ()
>  {
>    struct jit_program_space_data *ps_data;
>  
> -  ps_data
> -    = ((struct jit_program_space_data *)
> -       program_space_data (current_program_space, jit_program_space_data));
> +  ps_data = jit_program_space_key.get (current_program_space);
>    if (ps_data == NULL)
> -    {
> -      ps_data = XCNEW (struct jit_program_space_data);
> -      set_program_space_data (current_program_space, jit_program_space_data,
> -			      ps_data);
> -    }
> -
> +    ps_data = jit_program_space_key.emplace (current_program_space);
>    return ps_data;
>  }

Do the fields of jit_program_space_data need to be initialized?  The previous code used
XCNEW, initializing them to 0.

Simon