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[Ada] Small tweak to signal handling code

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Eric Botcazou <botcazou at adacore dot com>
Date: Wed, 22 Feb 2012 08:47:37 -0500
Subject: [Ada] Small tweak to signal handling code

This changes the mapping of SIGBUS from Constraint_Error to Storage_Error in
non-tasking mode on Linux, to be consistent with the tasking mode.

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

2012-02-22  Eric Botcazou  <ebotcazou@adacore.com>

	* init.c (__gnat_error_handler) [Linux]: Map SIGBUS to
	Storage_Error.

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