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[Ada] Remove N_Cleanups_To_Trigger in GNAT_GCC_Exception.

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Tristan Gingold <gingold at adacore dot com>
Date: Mon, 29 Aug 2011 06:20:57 -0400
Subject: [Ada] Remove N_Cleanups_To_Trigger in GNAT_GCC_Exception.

Preliminary work to handle foreign exceptions.
No functionnal change.

Tested on x86_64-pc-linux-gnu, committed on trunk

2011-08-29  Tristan Gingold  <gingold@adacore.com>

	* a-exexpr-gcc.adb (Unwind_Action) Rewrite as an integer with constants.
	(GNAT_GCC_Exception): Remove N_Cleanups_To_Trigger component.
	(Adjust_N_CLeanups_For): Remove.
	(CleanupUnwind_Handler): Call Unhandled_Exception_Terminate when end of
	stack is reached.
	(Propgate_Exception): Adjust.
	* raise-gcc.c: Add a few static/const.
	(Adjust_N_Cleanups_For): Remove declaration.
	(PERSONALITY_FUNCTION): Remove code dealing with N_Cleanups_To_Trigger.

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