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[Ada] Do not use specific stream routines for strings when not available

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Jose Ruiz <ruiz at adacore dot com>
Date: Tue, 2 Aug 2011 06:36:33 -0400
Subject: [Ada] Do not use specific stream routines for strings when not available

When using a configurable run time, it is very likely that stream routines
for string types are not present (they require file system support). In this
case, the specific stream routines for strings are not used, relying on the
regular stream mechanism instead.

This patch changes only the behaviour of configurable run times, not the
standard ones, so no test needed.

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

2011-08-02  Jose Ruiz  <ruiz@adacore.com>

	* exp_attr.adb (Find_Stream_Subprogram): When using a configurable run
	time, if the specific run-time routines for handling streams of strings
	are not available, use the default mechanism.

Attachment: difs
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