This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

[Ada] Generate VC in GNATprove instead of error for empty range check

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Yannick Moy <moy at adacore dot com>
Date: Thu, 20 Nov 2014 06:25:02 -0500
Subject: [Ada] Generate VC in GNATprove instead of error for empty range check
Authentication-results: sourceware.org; auth=none

Range checks on empty ranges typically correspond to deactivated code
based on a given configuration (say, dead code inside a loop over the
empty range). In GNATprove mode, instead of issuing an error message
(which would stop analysis), enable the range check so that GNATprove
will issue a message if it cannot prove that the check is unreachable.

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

2014-11-20  Yannick Moy  <moy@adacore.com>

	* checks.adb (Apply_Scalar_Range_Check): In GNATprove mode,
	put a range check when an empty range is used, instead of an
	error message.
	* sinfo.ads Update comment on GNATprove mode.

Attachment: difs
Description: Text document

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]