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From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
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Subject: Re: I do not understand this error...
Date: Sat, 6 Feb 2016 16:47:43 -0700
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Date: 2016-02-06T16:47:43-07:00
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On 02/06/2016 03:55 PM, John Smith wrote:
> 
> gtk_test.adb:16:04: instantiation error at gtk-handlers.ads:1039
> gtk_test.adb:16:04: subprogram must not be deeper than access type
> gtk_test.adb:17:04: instantiation error at gtk-handlers.ads:437
> gtk_test.adb:17:04: subprogram must not be deeper than access type

This an accessibility check. It means that it's possible for an
access-to-subprogram value to be copied into a variable which has longer life
than the subprogram. This is not allowed by the language.

-- 
Jeff Carter
"Help! Help! I'm being repressed!"
Monty Python & the Holy Grail
67