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[Ada] Avoid junk misspelling messages

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Robert Dewar <dewar at adacore dot com>
Date: Mon, 20 Apr 2009 10:18:53 +0200
Subject: [Ada] Avoid junk misspelling messages

This patch adjusts Is_Bad_Spelling_Of in Namet to return False for
identical strings. This prevents the compiler from issuing silly
messages saying "X is a possible misspelling of Y", where X and
Y are identical.

Not clear when this latent bug can surface. So no test. This was
actually observed for a case of the configurable run time that
omitted a unit that was explicitly with'ed. Too difficult to set
this up as a test.

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

2009-04-20  Robert Dewar  <dewar@adacore.com>

	* namet-sp.ads, namet-sp.adb (Is_Bad_Spelling_Of): Implement new spec
	(equal values => False).

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