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From: AdaMagica <christoph.grein@eurocopter.com>
Newsgroups: comp.lang.ada
Subject: Re: Generic 'access-to-subprogram' formal
Date: Sat, 9 Jan 2010 09:03:18 -0800 (PST)
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On 9 Jan., 13:20, xorque <xorquew...@googlemail.com> wrote:
> Hello.
>
> I'm attempting to write a generic wrapper around a C function
> that acts similarly to dlopen().
>
> What's the correct way to specify that a generic takes an
> access-to-subprogram type as a formal parameter?

Ada Reference Manual

12.5.4: formal_access_type_definition ::= access_type_definition
3.10: access_type_definition ::= [null_exclusion]
access_to_object_definition
                               | [null_exclusion]
access_to_subprogram_definition
3.10: access_to_subprogram_definition ::= access [protected] procedure
parameter_profile
                                        | access [protected] function
parameter_and_result_profile

For Instance:

generic
  type Some_Type is private;
  type Acc_Proc  is access procedure (A: Some_Type);